I had an edge on an older Burton Bullet 164 (my first hand me down board, way too big lol) blow about 1cm deep. I took it to our local board shop (a good one) and they pushed the edge in where it belongs, and from there I don't know what they did exactly but the edge is straight and the bottom of the board is perfectly flat. It is just a little ugly, but who cares? I've ridden that board about 10-15 times a season for 2 years that way, only because it's my deep powder board, otherwise waaaay to big for me haha. It's repairable, I personally wouldn't take it on myself, because plenty of people are better at it than me, and it still only cost me I think 30 bucks with a wax and edge tune as well. They only had the baord for a day.