Supposedly some sort of people asking for STLs situation caused it this time.
But honestly, I think the real reason is that Reddit doesn't want 3d2a anywhere on their site. It's the only reason I can think of why they keep banning 3d2a subs for "rule 7 violations" when all of the subs are very clear that anyone who asks for files will get banned. If reddit was operating in good faith they'd allow the sub mods to follow their own rules and issue bans before leaping to nuking the whole community.