As far as the Hossa thing... I personally don't feel too bad about the whole thing unless I see an injury report, because while I was expecting to find out he was nursing a pretty debilitating injury (ala Nick Lidstrom), if he was seriously fine enough to be playing unrestricted the playoff disappearing act is pretty inexcusable. Can't feel too bad about people who don't work hard enough to help themselves.
That said, the Hossa traitor angle is getting pretty exaggerated. It's funny, too, in that pretty much every media outlet was really supportive of it when it happened since it's almost unheard of in this sport for players to not sign the most expensive offer thrown at them, and frankly it worked out a lot better for all parties involved that things worked they way they did from a cap management point of view. I firmly believe Pittsburgh would be a worse team if they lost Hossa just because not having that massive cap hit let them pick up a bunch of role players (Guerin, Fedotenko, Satan, Kunitz(even though I still think they lost that trade)) that they couldn't have afforded with Hossa in the books. I think Ottawa is a good example of why this wouldn't have worked out real well long term, as well - it just doesn't work out very well to have all your cap loaded in three or four players over the long term, and Hossa, Fleury, Malkin, and Crosby would be accounting for over half the cap on their own once this inevitable drop happens. It wasn't a bad thing for Pittsburgh my any means to lose him.
From the Wings' side, they're going to need to some serious restructuring this summer just because basically every role player (including Hossa, who was barely even that when it counted) has a contract set to expire. Signing Hossa for a year worked out very well for them for that - they knew he was probably a rental, but they had a bunch of cap room open for this season, which is why it was a one year deal to begin with, because next year they have to extend a bunch of contracts, in the process increasing the price on players they already have in a game they're losing dollars in. I think resigning Hossa for a long term deal, which for some reason Holland is apparently still considering, is probably a poor call for similar reasons as the Ottawa comparison above, but I don't think there's really anyone involved in the sport who wouldn't agree Holland has been the best GM in the league the last decade and a half so I'll just shut up and let him be ridiculous.
For Hossa's part, the only part anyone seems to focus on, he could have taken a deal basically as Crosby's franchise winger for the next seven or so years, which frankly is a pretty sweet deal and I'm unsure why people just seem to assume he didn't consider it. I suspect a lot of why he did not take the deal was because of whiny (at the time) coach Therrien, who the current Penguins didn't seem to want to play for either, given that they weren't even in the playoff picture until the coaching swap. I am also curious if the amount of pressure wasn't a turn off for Hossa, since he's never really been the guy anywhere else. He was behind Alfredsson in Ottawa, Kovalchuk in Atlanta, and then signed in a Detroit team with Zetterberg and Datsyuk. Obviously Pittsburgh has plenty of other star power, but with Crosby being mainly a passer and that being the bona fide line one with him, I wonder if pressure wasn't a thought... he doesn't seem to do real well with that. The coaching change relates to the systems the teams played, which Hossa has said is a big appeal to him, too - the Wings play a very European style game compared to most other teams (even though for some reason they tried to dump and chase a lot in the finals?), which tends to be appealing to the higher skill/intellect European players who fit the system. Hossa knew he was a lock there, and in the regular season he was - it did work out pretty well until he decided to collapse in the playoffs. Not having Datsyuk near 100% to feed him the puck probably wasn't helping much there either, but man he choked...
The other Freudian angle of this that I think is often over looked is that when he was just breaking in he signed a long term deal with Ottawa as part of their future, and then was traded almost immediately for Dany Heatley in Atlanta, going from a team that ended up making the cup finals a couple years ago to one that has never won a playoff round, after the car crash incident. Several years later he was then traded by Atlanta to a Pittsburgh team at the trade deadline he only played 40~ games with counting the playoffs - a hell of a lot less than any other team he played for, in spite of this ridiculous traitor angle. Pittsburgh traded a bunch of prospects for him knowing he was probably a rental trying to win now, but I kind of wonder if Hossa isn't wanting to man up to a long term deal without a no-trade clause - something I'm pretty sure the Pens weren't offering.
Speaking of Dany Heatley and Ottawa, though, I'm a lot more curious about him than Hossa right now. Rumor(by rumor I mean every major hockey outlet is covering it) has it he's decided he's played his last game in Ottawa and is demanding a trade, apparently Edmonton and San Jose have sent in offers. After his Hossaesque disappearing act last season I'll be interested in seeing where he resurfaces, should be poised for a big year...
EDIT: Additionally, I'm VERY disappointed I'm apparently not going to get to play for the Hamilton Blackberries on NHL 10...