What on earth is he going to do with >$26,000? It doesn't cost that much to produce and ship the promised goodies to the backers, and it's not like he's going to need to spend a lot on marketing the thing. I guess he could just pay his living expenses for a bit while he works on it.
What's the general etiquette/precedent on kickstarter when someone receives backing vastly in excess of their goal? Is it acceptable to just plough the cash into whatever you want?