electric winch + trailer + ramps, load it up. back trailer with unit into a garage. making allowance for ramps so when you roll it off, it ends up were you want it. if not able to push / pull it off trailer, get a hand crank winch, or some chains and binders or like. and little by little crank it backwards till it wants to roll off on its own weight with someone in seat to keep it on the ramps.
why are you trying to push it? pulling should keep things aligned within reason. like a hey wagon / running gear. backing up a hey wagon can be a nightmare with jack knifing, due to tongue pivots at truck, and then front wheels turn with the tongue.
generally any 4x4 truck/car needs to be towed on a trailer / flat bed. vs having just the front wheels up on a dolly. due to possibility of of 4x4 getting engaged and causing all tires to turn and possibility at different speeds.
i would assume a power trac with hydraulic motor per each wheel. would act just like a 4x4 truck/car and needing to trailer it, due to wheels possibly hydraulically locked together like a gear 4x4 car/truck would be. and one or more wheels is acting like a pump. and the other wheel is acting like a motor, and causing it to jack knife on you.