Is my pacman frog dying?

[DVirginiana]

Though I don't think one night in the high 60's with multiple heat pads would be enough to kill one, that could be part of the problem. They're pretty easily shocked by temp changes.
If you have air vents or anything near him/where they can blow on his cage, close those immediately. Having air blowing on them is really bad for them; it can get them really cold in addition to drying out their skin.

[Bombina Bob]

Pacman frogs are pretty tough. I regularly have nights in the mid 60s and mine still eats like a pig. "hibernating" usually happens when the tank dries out so the frog will burrow and create a mucous cocoon to conserve water. but since the frog is splayed out its legs, im not too sure. if you answer the questions Lija provided, we will be able to get an answer. keep us posted!