As soon as TT was spun around and moving backwards. No more forward progress, Suh clearly had TT in his grasp and under control, and TT was in jeopardy because Suh could have body slammed TT like a rag doll on the spin and we would be stuck with EJ on Thursday. I mean no offense to you, but if the same play happened and Mario had hold of Tanney instead of Suh and TT, you and many many others would be crying foul and how much the refs hate the Bills.
No, it was the refs for blowing the hold non call. But it was a great pass and even greater catch (just shouldn't have counted).