The rear end dropped can only go about a foot in reverse

Good morning,

Are you sure the hand brake or emergency brake is not applied? It sounds like it is not released.

https://www.2carpros.com/articles/parking-brake-shoe-replacement

I attached pictures and procedures below for the parking brake system.

Roy

The emergency brake doesn’t work in my car currently so I don’t believe that would be it. The brake on the passenger side rear was grinding really bad it was most likely metal on metal and made an awful noise constantly then it did what I described in the first question now the rear end of the car looks like it dropped way down.

Okay, then most likely the rear shoes being metal on metal are causing the issue. You will need to replace the shoes and drums.

https://www.2carpros.com/articles/how-to-replace-rear-brake-pads-and-rotors

I attached the procedure both in a guide and pictures below for you for the replacement.

Roy

That would cause the whole rear end to drop and the car only being able to reverse a foot before jolting to a stop?

Yes, it loads up the rear suspension and the rear will drop.

Roy

Can you please shoot a quick video with your phone so we can see what's going on? that would be great. You can upload it here with your response.