I have a little, not much, sympathy with the painter. But he should have done it himself or at least get someone who knows what they're doing! He sounds glum because he, and I, know just how hard he'll be working up to Thursday. And paint ain't cheap either. Still that's his tough luck - if it had reacted he'd have had to do it again anyway. That's one reason why painting is expensive - you have to allow for the unexpected to happen now and again.