I gave up and took the car to a Volvo garage. They informed me that the entire connector box needed to be removed and disassembled. So, essentially the connection unplugs from the front! They didn't say it had to be done this way since I messed up the tabs while trying to unplug from the rear.

Can I just break the top off of the old tabs to remove the plug?

I cannot remove the seat belt buckle's electrical plug. The tabs are not cooperating. Can a 2004 be that much different? Any help or suggestions would be appreciated.