He could still have a case about the collusion reducing his value. However, there are still the issues of when the Broncos tried to trade for him and he insisted on being paid like a starter and to have it be an open competition, and of when the Ravens were set to offer him a contract and his GF badly insulted a member of their FO without him publically chastising her, so they didn't make an offer. That's two teams that tried and he burned the bridges with them. Those will be tough to overcome, even more so if he turns down another offer. At some point it becomes a case of him being too big a pain and too after money.
He should have taken a reduced salary with the Broncos, with large bonuses for games started so that if he won the starting job he would have been paid for it. Say $4 million base, and $500k for each start after two starts (so that if he just has a start or two because of injury it wouldn't kick in). That way if he won the job in training camp - and he might have - he'd get his $11 million.