Ouch. It sounds like it got a leeeetle too slow and stalled the wing. When you get it repaired, take it up high and practice the slow stuff, including the stalls. If you haven't done it on purpose before, get someone to help talk you through it. Practice from level, and from turns, and get a mental picture of the attitude the plane is in when it happens. Then you can avoid that attitude when you're down low!

If you do find that happening to you, let the nose down a little to reduce the angle of attack, and add power. If you add power and haul back on the elevator, you will likely find what a low altitude snap roll looks like. ugh.

The little dings we get learning to fly these contraptions aren't so bad so long as we learn something from them.

Later,
Larry