Thanks guys for all the input. Orionf, I didn't even think of my sway bar, and yes I do have an aftermarket one. I think it was the e-brake breaking free because it was impeding my reverse until I engaged the clutch. I figured it was but always safe to check! Thanks guys!
(By the way, Marge's canyonero doesn't fit in the garage, don't forget, it's 2 lanes wide!