That edge is NEVER going to stay fixed. Cut that bitch off ASAP. A dremel or a grinder is optimal, but you can use an edge file and saw it off. It will not have any impact on your skiing as long as it doesn't interfere with where the edge bites the snow.
The steel edge has a little spring left in it after it's bent, so it's fighting hard to pop out like that. Epoxy and other bonding methods aren't able to hold edge in. Think of it this way, the original press of the ski couldn't hold up to the abuse and the edge popped out... do you think you're gonna be able to make it better than new?
Trust me, I trash my skis and I have had to do this to 8+ different ski tips/tails. If you decide to do it this way, feel free to PM me any questions you may have.