Had a friend who used technic pack... So I looked into it. The next day during band I cussed him out for it. There is a saying that goes like this; "possesion is 90% of the law," I believe the technic pack should be routed out, however on Mojang's TOS I didn't see any real clarification on whether or not a modders work is protected by their copyright, would be cool if i could get some clearance on that.
Well, seeing as the Official MCF has 3 sections and a subsection devoted entirely to modding, I'd say it's fine.
Also: I had originally spelled modding as nodding. Pretty funny in that context.