Help! Hitch stuck in ball mount.

Just bought a new (used) travel trailer and a brand new weight distribution hitch and towed it home. After getting it home and parking in driveway, I had a hell of a time getting the hitch off. The driveway is gravel and the truck was a bit on grass, everything was not completely level and the truck was not lined up completely straight with the trailer, so I think that's why we had a particularly hard time getting the hitch off on the one side. I was working on a time constraint (I had to leave for work) and doing this for the very first time ever, we made a hasty decision. Was having trouble lowering the ball from the ball mount. In hindsight, I think I know what we were doing wrong. The person helping me suggested to just dismantle the hitch bar from the receiver, so that's what I did and drove the truck out. This worked, but now the piece of hitch is left dangling from the ball mount. I would like to get it out from under the ball mount, then reinsert the hitch into the receiver before connecting the trailer again; however, don't know how to get ball free from ball mount. Otherwise, someone will have to hold the hitch up perfectly in line while I back the truck into it which seems impossible. Any suggestions welcome. Thanks!