Well guys I have to jump in here. I also have a H9 Edge 25% and have been haveing a similar problem.. Not rolling but diving out of know where. It was doing it only on my right side at about 45 deg from my standing point and about the same alt.... Well I pulled the antenna out of a tube in the bottom of the fuse and ran it along the top of turttle deck and taped in down. Well all was cool last week then.. "Boom" I got the same glitch on the left side of me.....????? I'm still stumped.
I do have to admit I changed the TX crystal from the one that came with the radio ( A Brand New 8103) to the one I was runnig in my old 652. I was really starting to think it's the Radio.. and I was going to send it in for a tune job. But there are so many other possablities. ????
The plane is rock solid the rest of the time.
Here's what I have in mine.
JR 8103.. channel # 45
Hitec HS 5645 dig. all surface's
2 for the Elev.
2 wing
1 Rud...pull pull setup
1 537 thott.
180 Saito

By the way it also has done it a differant flying fields.

I'll for sure keep a eye on this thread... AND post anything I find to fix it.
Thanks Guys