My corn has done similar things every once in a while (not sure if exactly the same) trying to get his jaw back in.
My BP might as well, but she is very shy and I rarely watch her eat, even if she lets me, which she usually doesn't.
Take a deep breath and advise soon. If it's just a jaw issue/reconnecting jaw it should clear up ASAP.
Again, just a thought. Not 100% sure from what you said.
- - - Updated - - -
Yeah, agreed. Great minds think alike.