rite heres a strange request lol

i have mondeo st24 on a v plate, my central locking packed up just over a month ago now and no ones seems to know whats going on, i have power at all motors etc but nothing else

ive changed control boxes, reprogrammed the key fobs the lot

so i changed my dirvers door motor and ive magaed to get central locking to that door lol, so changed the passenger side now and that works

so i have a wierd feeling that all the door lock motors died at the sme time some how

but one of the rear doors is dead locked, the other is fine for some strange reason, so how do i go about disengaging the deadlock on this door

as electronically locked, but if the motor is fukt, what else can i do, without damaging the door, dont mind the doorcard, but i carnt afford to do any damage to my door
i just want this problem fixed, so ill be buying 2 rear motors next week aswell