Yeah, it's bizarre.

It's all part of Kelly's criminal case stemming from the bizarre October 22 arrest -- after Kelly left Von Miller's big Halloween party and wandered into a random person's home.

Cops say the 24-year-old plopped down on the couch next to a woman who was holding her baby. Kelly was allegedly mumbling incoherently.

The woman called for help -- and a man who was inside the house grabbed a piece from a vacuum cleaner and used it as a weapon to chase the QB out of the home, striking him several times along the way.

In the footage, taken from the security camera at the home -- you can see Kelly (apparently dressed as Woody from "Toy Story") bolting out of the home.

Kelly was later arrested and charged with felony criminal trespassing ... and you can see in police station video we've obtained, the QB was distraught over the arrest.

But on Wednesday, the QB struck a deal with prosecutors in which he agreed to plead guilty to a lesser charge of 2nd-degree criminal trespass -- a class 3 misdemeanor -- and in exchange, the felony trespass charge was dropped.

As part of the deal, Kelly was also sentenced to 1 year of supervised probation, 50 hours of community service, and fines and fees.

For the Broncos' part -- they released Kelly shortly after the incident, with GM John Elway saying, "Even though Chad's no longer part of our team, we've offered to help him however we can and are supportive of him in every way possible."

Kelly is currently a free agent looking for another team.