Amen to that. We hired a guy that just completely polluted the office morale. We were small and wanted to do the "right thing" so we tried to figure out how to make it work for way too long. Finally ended the relationship and the whole place felt better. He wasn't a bad guy, just didn't fit somehow. He was really big on "lanes," didn't handle code review well, and on and on... Important lesson learned. It would have been better for him and us if we had ended it much sooner.