HELP! Mk5 driver's door stuck on Locked!

[whizzo]

Hi folks
Hope there's somebody out there with experience of this?

My MK5 was booked in for some MOT welding on the arches a few days ago, and only yesterday the bloody driver's door decided to pack up entirely. Not only am I having to clamber in and out through the passenger door, but the welder won't be able to fix the O/S arch with the door in the way.

It won't unlock from the inside using the handle, and it won't unlock from the outside using the key. It's as though the wrong key is being used. I've managed to get the top part of the door card out of the way and found the whole locking mechanism to be boxed in with an anti-jemmy security shroud, so there's no easy fix there.

It appears my only option is to get the angle grinder out and cut the door off. Is there another way of releasing the door from the inside?

Thanks!