If he could get a few easy wins under his belt I think his game and confidence would start to come back.
Game and confidence won't come back by beating cake-walk opponents.
I have not seen his match in Dubai, maybe it is not just all about HIS game and HIS confidence, but due to the fact that opponents are catching up. The years of utter domination my be gone.
Please note, I am not predicting his decline, though.