Years ago I did the same to the kitchen, by the time Dh came home from work most of the paper was off the wall but he had the last laugh as once I seen his face I told him I intended to decorate it myself and so I had to. A good job I did too.
Oh oh. The way I would sell it to him is that it saves him a job and you are going to take him out on Saturday for his birthday to compensate.
Hope he has a great birthday