Greg didn't name any names so I don't think people in the locker room will be all that upset. He was a 7th rounder, but he also won a national championship, so he's going to a mic stuck in his face more often than the typical borderline roster guy.
He is not going to be assaulted in the locker room for his statements - that's just silly.
He is not going to get cut for making these statements. If he gets cut it will be because of his relatively weak arm and other measureables, not because of his mouth.
The locker room was toxic. Everyone with any sense knows that. While Greg didn't say it, he was mostly talking about Holmes. He's their cancer. Sanchez is a problem as well since he underperforms at the worst times, but since he's a high draft pick they're not giving up on him (yet). Burress probably has had an effect on the locker room too.
All Greg did was allude to some problems in a relatively non-specific way. Some people are acting as if he called Rex Ryan and dundering blowhard and said Santonio Holmes was an overpaid primadonna. He didn't. Get some perspective.