Does everyone forget that Yzerman was butthurt about how he was being treated by Bowman, and demanded a trade...that he almost went to Ottawa (for Alfie...) and was nixed at the 11th hour. If we forgave Yzerman for that, people need to respect Marty and his decision to move on as well.
I think it's understandable for Marty to be upset. Think about it this way: Marty is the Captain of Stevie's team, selected as the best man to lead them to the Stanley Cup. Stevie expects him to perform at the highest caliber and be THE leader of all his troops on and off the ice. There have been many platitudes given to Marty since Stevie took over, and Marty and Stevie talked about how upset he was after being left off the last Canadian team. He won the Art Ross last year and is the pretty much the heart and soul of your organization, even without Stamkos, Marty is killing the scoresheet showing how much he deserves to be on the team. Now, Stevie puts together another team but doesn't think the man he selected to lead all his other men is good enough for this new team.
If my boss did this to me, I would look for another job too. And I think this is why Yzerman announced right after they won he will not return as team Canada GM, it destroyed the relationship with his Captain.
That's not what happened. The Red Wings were working on a trade with Ottawa and kept Yzerman in the dark about it. And Yashin was supposedly the name involved in the deal, not Alfredsson.
Yzerman was obviously upset but his only requests were that the trade not drag on, and if he was traded he hoped he would go to a contender. It wasn't about forgiving Yzerman. The fans were mostly outraged when they found out. it was forgiving Bowman and Wings management. I think it was Ilitch who ended up killing the deal.
The only similarity is both St. Louis and Yzerman both played their asses of for their team while the drama was going on.
As for Marty St. Louis, he has been a class act all of his career, so him asking for a trade because his feelings got hurt doesn't ring true. Or at least sounds oversimplified. It could very well have been that as a 38 year old, once he found out he wasn't getting a chance at a gold medal he wanted to be traded to have another shot at the Stanley Cup.