BP Eating Problem? Not just a winter fast question...

[maverickgtr]

Our male BP is coming off his winter fast, and we got him a small mouse today with the plan of getting him two more in a few days and then trying rats to see if he's in a rat kind of mood to ease him back into eating after so long of fasting [right about two months]. Well, he took the mouse today, but while I was monitoring the feeding he had almost all of the mouse in his mouth, the rear legs/hindquarters and tail were still sticking out, it's legs started kicking like it was trying to get out and it's tail started flail wildly. Sparks [our male BP] looked freaked out and froze but he finished swallowing anyway and then just looked nervous. It's been about an hour and he hasn't regurgitated it. Should I be worried? He's coming up on 12 years old and he's only ever taken live [seriously we've tried so many times to get him to take frozen thawed] so it's not like this is his first time with a live mouse/rat before, so I doubt he would've released the mouse before it was actually dead, but this is first time I've seen this happen and I'm just really hoping for some reassurance that I'm not going to have a problem later.

Edit: Just to add a little more, he had a good hold/wrap on the mouse and held it for the usual amount of time. I've seen him have worse holds on mice/rats before and they died/were eaten well enough. Any advice/thoughts would be greatly appreciated, I'm still a little freaked out and will probably worry about it for the next couple days.