Sugar Glider Central

We have a SG that is about a year and half old. He seemed fine all this time until about Monday. He's been out of his sleeping bag a lot more but just sits/hangs around. He use to be so wild and at night would run all over the cage. Now I can hold him and he will walk around me or just be all slow and down. We did have him in a bigger room and let him run lose at night in that room. However we found out we had a mouse in the house (we think we got him) and were worried he would get hurt. So we keep him in the cage more and in my daugther's room. We moved him about 2 weeks ago. Can this be the cause? anything we can do?
thanks
UPDATE
Sadly I found our Glider passed away today when I woke up. He was at the bottom of his cage. I had no idea he was that bad and was hoping to find someone to look at his today (called around friday and no vet could help) We did have a fun day with him yesterday but he was slow and kind of sad acting still. I he will be missedDarin11382009-10-19 06:20:25

Moving him could very well be the reason for his odd behavior, although a vet visit would also be a good idea.  Especially if he hasnt been to the vet in a good while.  Also, is he a lone glider or does he have other glider friends?  Gliders can get lonely and behave very differently when they get depressed.