"Removing" open pallisade doors.

[Frost6]

Hello, i recently took over a decayed old base and it had a square pallisade wall with 2 gate areas.
Both areas had 2 gates built in the safe airlock kind of way, and they were all open. Someone lent me a wrecking ball and i used it to wreck the innermost gates cornerpost. This smashed away a huge part of the pallisade on the side it was on, and the cornerposts for the open gates. next day i did the same on the other side of the gates, but the "gates/doors" themselves are still there, in open position.
Is there anything i can do to fix this problem?

Also, I dont have they keys for them, and already made a village claim over the whole wall.


TLDR,
Open wide pallisade doors
Wrecking balled posts and walls on both sides. Doors still there.
No key.
How to "fix"/destroy the gates?

Thank you

EDIT: Found a point where i can "wreck" what i believe may be the open gate. Wrecking ball set in 24 hours for attempt=)
EDIT: Worked, could smash open gate by wrecking in the middle, even with it open. Did not seem to cause any chain reaction DMG to nearby pallisade though=/