I'd stick with him. If nothing else, we're playing some of the most entertaining football of the last few years. Up front we now seem to have a bit of structure and a plan of how to play.
There are massive issues at the back, mainly down to lack of talent but also some of his misjudgement (Jombati at CB, too much rotation). But if he gets on top of that we should move up the table.
We've been held back by late recruitment in the last few summers, so hopefully he can start work on reinforcing the defence as soon as possible.