I don't see him riding an ATV with 2 dead bodies along for the ride. Especially in that terrain. I can see him going up hill and woopsie, dead body fell out. I imagine he probably had a 4 wheel rig with a bed.
Doesn't matter now how he got them there. I was only curious about the gate because the area was searched before and if the gate had been closed, SAR might not have gone there, thinking the general public would also be confronted by the gate. I know that often, regular permitted users get keys to gates. I've been issued them before. Did he have a key to a gate and was the bodies behind that gate? Again, this doesn't really matter. We have the bodies now.
Hunters routinely use ATVs to haul out Elk that weigh a lot more than KF and WF.
My point is that with an ATV, the gates do not matter.
Also more covert.