Never-ending Lockdown?

[CobaltAthos]

Diamonds are forever, but Crystal Lockdowns shouldn't be. And that isn't all that helpful when you need to "convince" new space pirates of their bad decisions. (I'd include an image but I just couldn't cut it down to size(256KB).) So, I was running Crystal B, and I had the task of destroying their hull without killing the crew. I didn't have a single piece of weapon, so I had to resort to destroying their systems with my boarding team. I used Lockdown a few times (I don't remember how many times, sorry) but then a piece of the Crystal Lockdown was left over on a door and never vanished. One time the crew was attacking that door and the other they just stood there. So, not supposed to happen.