Seat Belt Pretensioner Plug

Dog chewed up the seat belt. Bought a new one and when pulling out the old one I'm stuck at the pretensioner wire plug. It doesn't pop out easily and seems pretty flimsy so I want to make sure there's no trick to unhooking it. I don't see a release tab, and the empty receptacle on the new belt doesn't give any clues. I assume I just need to pry a little harder, but I really don't want to break the plug and have this turn into a total fiasco.

Also, based on other threads I should disconnect the battery, right?

UPDATE: Figured out that the black clip pops up which should allow the clips to disengage from the side of the socket, and I can get them to unclip, but the plug still doesn't want to come out with a reasonable amount of force.

UPDATE 2: After some wiggling it finally popped out.

 

You and I must be related somehow.

Except that had I wiggled it, it would have broken...