[souffle]

It isn't normal for the penis to be outside the sheath except when mating. Redness can mean an infection or a blockage of the tube leading from the bladder or a prolapsed penis. Could he have fallen and injured his spine or something internally? Does he bar climb?
Check the water bottle is working well and he is not dehydrated.
I hope the vet can help. It won't be torpor at the temperature you are saying it is just now. It's too warm for that.