Cromarties play took a big dive after his shoulder injury but he was fine prior to that. I would also hope Cromartie wasn't cut over standing up for what's right
With that said given Irsays comments I think its a clear case of an Owner putting personal interest and gain ahead of a better cause.
The first three years of Lucks career so far wasn't so bad. Not too many rookie QBs go three 11-5 seasons in a row and make a trip to the conference championship game.
I know things are rough right now but there is no reason to exaggerate things.
It would help if he could cover someone 1-on-1. They thought they were getting a man CB but he cost them too much for a zone CB that needed safety help, something they could accomplish with Melvin anyways. It was a matter of $$$$ and I am sure the Cromartie family is missing the $$$$ - everyone can see that.
Plus, Patrick Robinson was getting healthier (though he sucks too but they're far too much invested in him at this point to give up on him). It was purely a $$$$ decision, IMO.