this isnt uncommon especially if you are hitting a lot of rails which, assuming from the edge cracks, you are. the best way to fix this is mix up some epoxy, spread it over the delam gap and push the spread epoxy deep into the crack with a metal scraper, continue to do this until you feel there is epoxy in all of the delaminating area (you want to fill that crevasse with you mighty juice), then clamp it up, if you clamp it and there isnt epoxy being squidged out, you need more epoxy. then leave it until it goes off/cures (see epoxy instructions for details, the longer cure the better) dont get rapid cure epoxy, its not as strong. I did this repair to my skis 2 seasons ago and its still holding.