Dude was all in, trying to get ready for the season. Went to Hawaii with a huge number of his team-mates, trying to kickstart the season. The team decides not to pick up his option, which is like the anti-franchise tag stigma for the new CBA players and he got heated. He said things that some fans didn't like but anytime an athlete says something he has a 50/50 chance of getting under someone's skin.
The NFL is a bottom line business, with the ability to tear up contracts when the budget calls for it. Bruce's immaturity left him a little naive but as a professional, he may learn to keep his thoughts close to the vest.
This is what early critics of Pete's latest return to the NFL spoke of (like Jim Mora) when they said problems for Seattle would be after all the young players started to get experience in the NFL. They were being overly critical of Pete but the team is now starting to get its core into their second contracts and the decisions of who stays and goes is starting to play out.
Bruce had his chance in the Atlanta game but couldn't raise his game. He has been moved around as part of a plan to expand his impact but the clock is up and the team couldn't justify locking him up with the option. Doesn't mean they are giving up on him, just that he needs to go out and prove he is worth the money he would have been slotted for in the option year. Whether he stays or goes, he needs to put on tape what he can be expected to look like over the next 4 years.