No idea who the tinkerer was on this project. The handle has been cut in two places and reassembled with an aluminum support bracket. There is a cut below the lower portion which was probably not to the liking of the owner. The handle pivots, but only a few degrees left and right. Apparently some type of stop was incorporated.
There is a red plastic label on the bracket with pat pend, (patent pending) on it. That's an old trick people and companies have used for a very long time. It looks like there is a patent being filed for the item, but in many cases there isn't. That's supposed to keep the competition from duplicating your invention because there's no way to check if a patent has been filed. If it actually has, they could be in violation and the inventor can sue them for patent infringement. Some of you may remember the controversy about the Allen compound bow.

Looks like somebody wanted a two piece bow, but did not want to buy one.
The patent pending Dymo label has to be a joke. That might be the most abused bow I have even seen!
I don't know how well it works, but it sure is uglier than a mud fence.
An unusual modification but it strikes a resemblance to a couple bows of more recent manufacture Border being one. From what I remember as a new guy back when guys weren’t afraid to “modify “ equipment if they believed it would make them successful on the range or in the woods. i don’t see that as much anymore. I do remember the Allen/Jennings dispute, Bear ended up owning Jennings.
Maybe a workaround the stabilizer rule? A longshot, I know.