One-legged deadbeat dad

Now judging by the title of this post, you're probably thinking this is a troll....

But this is a serious issue...

[Please excuse the lengthiness of this post but I DID use paragraphs because I sure as hell wouldn't read a wall of text either.]

I recently started dating this guy named Thaddius a few months ago. He seemed to be a really sweet guy, we went on several dates and had many late nights where we talked of future plans. We shared so many of the same interests. He loved my son to bits. Him and Thaddius would always play in the front yard and do a lot of other Father-son type things. He was perfect.

But here's the thing:

Thaddius has a prosthetic leg...

I have to admit, for a guy with one leg he sure could move just like anyone with two legs.

All seemed sweet but overtime he began to grow lazy and bored with showing me affection. Eventually he lost all interest in me, but I didn't want to kick him out. I thought it would be cruel to kick him out on the streets being that he only has one leg and all, so I let him stay.

Well THAT was a big mistake....

He's lazy, a slob, a drunk, he swears all the fucking time and once he threatened me by swinging his prosthetic leg at me! There have been several occasions when he would come home after 3am and reek of liquor, and I can't count how many times another woman has come over to MY house looking for HIM! EXCUSE ME! but if you're going to cheat don't have the bitch come over to MY house when I'm there!

Honestly I want to wait for him to pass out drunk so I can take his leg off, put him in a wheelchair and roll his ass up out of my apartment. Thaddius is really starting to ruin the atmosphere and I can't have him being a negative influence on my 4 year old son. Can I get in trouble for putting a handicapped person out on the streets? I'm so close to doing this.

Please I need help with my situation guys. How can I deal with my burden in a reasonable way?