Another G29 that doesn't move!!

[sxspdz28]

Played 27 holes with a bit of driving back and forth to course. Started heading home and was going very slow, figured batteries were dead. Stopped to turn, hit gas and nothing. Pushed it home and put it on charger, next morning brother had unplugged charger because it was really loud. Put charger back on, waited ten minutes and when I went to pull plug from cart it was very hot and smelled like something was burning. Got a chance to check batteries and they were about 50.5v. Two fuses were ok. So I flipped it into tow for about 30 seconds and flipped it back, cart made some noises and worked fine. Any ideas on what's going on, don't want to push it home again?