Was reversing up a hill today and suddenly everything locked up. Could not move the gear stick or transfer stick, engine was running fine with the clutch in but then just shudders when you bring it out. I was initially thinking the gearbox/transfer box. When the recovery guy came he some how managed to get the stick unstuck and could drive it in 4 wheel drive and could reverse. Its away to the garage now but he was thinking it was more likely to be related to one of the front swivels. What you guys think?