I think we all need to pull together after such a shit start. He's very likely here until New Year, (whether he likes it or not) so he needs to get his head down and pull a few worldy performances between now and then in order to facilitate getting a move that suits all parties.
He has a few bridges to build and his first meet up with the rest of the squad will be uncomfortable but they are all professionals and hopefully the likes of SJM and Tyrone will a) give him a verbal kick up the arse and more importantly after that, b) draw a line under that and all can move forward.
I'm pissed off with his antics but when he puts the jersey back on, just get his head down and put 100% in. Barry did, Southgate did, he can.