Auto body repair & detailing: sliding van door, ford aerostar, best bet

Question
How does one remove the sliding van door when it inadvertantly had fallen off while driving? Someone has attached it back on but when i use the door handle no luck in it sliding.Second i presume that the guides this van door slides on are worn. It is 93 ford aerostar xl.

Answer
I answered this one before. your best bet is to take it to body shop, I can not see your problem and these are not the simplest to work on.
If the door fell off, the latch can not be safe, the rollers are probably bad and the arms could be bent. It is not safe.