What you need to do is unplug machine and then looking at the front were the seal is you will see a plastic unit holding the clamp for the door seal on.
Use a flat screwdriver and prise this off then unlip the front of the door seal off.
Then just reach in and you can get the bracket out. as you need to hold it in place when you fit the new hinge on anyway.
If you need anymore info just get back to me.