If the engine was running yes it could have pumped most of your oil out. So when you get it home open the hood and check everything closely. Oil filter, oil pressure sending unit, oil pan. If that much came out you will find it but your guess of the oil filter is probably right. Glad your OK!!!!
89YJ 2.5L TBI, AX-5, NP231 SYE, Ford 8.8, Yukon Grizzly, Tom Woods Shaft, 33" BFG T/As, 4" lift, Warn VR10000s.
AF Jeep Club Tail #184