Well first go to the 3D view and look around the vehicle to ensure its not "hung up" on something (pan around using the left and right keys). If you are stuck, try the "W,A,S,D and X" to go forward, left, stop, right and backwards respectively. If stuck in mud/swamp (unlikely in 73 Easting) reverse straight back, don't try to turn as you reverse. You can use the F9 view but that doesn't give you the same all round vision as F8 (but is useful in other circumstances). I'm here now and can chat in TS if that helps?