Yesterday I was packing my bags for a wedding and i attached the battery grip to my 5Dii, then realized that i didnt tuck the battery cover in its little holster within the grip, so i tried removing the battery grip and the threading seems to have broken. Now the wheel on the battery grip spins somewhat freely (i can hear/ feel it 'click' as it turns and catches some remaining threading), but the grip is stuck on the body.
Any ideas on how to fix it without having to send the body in to Canon? If possible, id rather just dismantle the grip myself to remove it, and send that in on its own rather than have my body out of commission for 1-2 weeks. Would opening up my battery grip void its warranty?