Everything related to HG/SS is still considered experimental. Additionally, I would guess that you are trying Suicune -- Which is something that I can't test under the debugger because it crashes on that encounter and is therefore something that I don't have the capability to check into. Sorry.
I guess I should have waited for the experimental stages to be over before attempting this, but oh well. Atleast I figured out when the time/delay is generated when RNGing for ID/SID combos in HG/SS, but my post went unnoticed and I'm sure someone beat me too it.
It actually does say in my post that I'm after Suicune. And, ugh, that's annoying. Prehaps try it on a different poke with that seed and see if sumfink happens? At any rate, thanks for your help.
I guess I'll go buy a used copy of plat to get a Shaymin before the event is over and leave this one on ice.