Please help - door lock switch bowden cable

[m4rkw]

I just popped a rear door card off to check the size of the speakers and had a strange issue when I put it back on. There are two bowden cables in the door, one for the handles which is all fine and another for the interior lock switch.

When I put the door card back on I noticed the lock switch was stuck in the locked position. I took the card off again to have a look and it seems that the bowden cable is in the right place but there is so much tension on it that the switch can't move. I'm pretty sure it's on right as there's no other way it can go on and still be held in place.

Strangely, despite the switch being stuck in the locked position, if I use the central locking with it in that stuck position the door stays unlocked.

For now I disconnected the bowden cable internally, which allows the central locking to work. But I'm really baffled as to what's happened here, the only thing I can think of is that something must have slipped at the other end of the bowden cable.

Any ideas?

Thanks!