Possible Exploit?

I was playing tdm, and when I spawned, one of the buildings didn't load. I was able to shoot through it but people couldn't shoot me.
Could there be a way to not load certain buildings for the game? Or replace them with blank files?
Just wanted to share.

Nope it was for the full game. About 40 mins.
You could see people floating on it when they were on the second floor.