I think so, but I did see Fat Boss flip his over a few times. Nose up, into a headwind, straight up in the air, maybe, but he did flip it.
I havent come close to flipping mine over, but after watching him flip his, I handed him mine and he did the same thing. Both times was the EXACT same shot, and the disc flexed nose up into the headwind. Once it hits that point, very few, if any discs are coming back. Speed Demon, probably.