i cant believe you were almost stuck on flat hard ground then you went through a big mud pit! what kind of tires are those?
haha, it happens when you sit in one spot for a while in clay mud, that stuff is thick, slippery, and sticky at the same time. Puttin' it in two doesn't help either. They're Hankook Dynapro MT's, I've been impressed with them on and off road.