rear brake job gone wrong. electronic parking brake stuck all the way out
 

i was changing my rear pads today and i was using my obdeleven app and i engaged the parking brake with the calipers off the car and messed up. they will not retract now no matter what i do. how do i get them to go in. I screwed up and tried pushing one in and broke it and it started leaking brake fluid all over.

At this point, I would suggest you seek the help of a professional.
Here is a DIY guide of how to change the rear pads. It might help you find out what you did wrong: https://www.audiworld.com/forums/a6-...tures-2900422/