Here's the thing: O'Reilly was a problem in the locker room. How much his locker room problems hurt the team, it's hard to say. But given the return we got for Ryan, I have to imagine Botterill was motivated to remove him for reasons other than asset management.
That the cancer appears to have spread in the Blues room now just lends more credence to the idea. Is it definitive? No. But there's no reason to poo poo it either.