If my lo wakes up around that time, I feel the diaper to see if it's pretty full. If it is, I just go ahead and change it. Better than waking up to a wet baby in wet jammies. He tries to play but I'm all business and he never has trouble going back to sleep afterwards.
Jenn, my dh also has trouble understanding that nighttime is not playtime. If ds wakes up in the middle of the night (he's teething and has a cold poor thing!) dh tries to calm him by bouncing or taking him into another room that's lit. *ugh* Maybe one of these days he'll get it.