Harry's fine! It was all his idea, and anyway - magic :). He's quite happy to be in there (albeit briefly) and has been indulging in pleasantly unrealistic daydreams about being kept on shelf and taken out only when Snape needs him. Snape, although he'd be the last to admit it, would think that's a terrible idea, because then who would steal his toast in the morning? They tried leashing Harry to the bed one day, but he got so bored that his accidental magic acquired for him two shelves from the Young Adult section of the community library, a pinball machine, and the neighbour's cat (it shed). Ultimately, this stuff ends up being relegated to "fun dirty talk, largely impractical" and they just get on with things.