The move was imprison, not block
That said, it's really not that difficult to bypass
As with standard smeargle, always switch into a pokemon that's immune to spore, ie grass types, or lead with a taunt user, and the smeargle can't do anything
Worst comes to worst, sack a pokemon that isn't a threat to the opponent's team. That particular spread can really only mess you up once per battle if you're competent