Remove the wire hangers from the shirts, put the guard uniform on over my prisoner clothing.


Attempt to bend the wire hangers into a sort of straight wire for lock picking purposes, then bend an additional section doubled over itself to serve as a torque bar for said lock-picking mechanism.

Diagram explaining:

Left piece is the rake, use it to lift the locking mechanisms, while using the doubled over part of the right piece to turn the lock's cylinder and thereby lift the locking mechanisms above the threshold. This should open the door, and even if there is no need for a torquing mechanism, it would come in handy in future encounters with these terrible creatures known as doors.

Spoiler Alert, click show to read: