I've already reported the individuals involved to Wargaming, so I won't waste time naming and shaming specific individuals, but I feel compelled to share the story nonetheless because the actions described below are so damn lame (I have no idea if they were also intended to abuse the Blitz Madness competition, but I suppose it is possible- I certainly raised this possibility in my ticket).
I was in a game on Middleburg in my VK 30.02M. There were eight M4s in the match, four on each side, with some recognizable names driving them- all clan members from Attrition, Defiant, Titan, & Blitzkrieg (with the majority from Attrition).
The goal of the exercise was to ensure that one of the eight scored as highly as possible, mainly by blocking opponents and teammates. In my opinion, this is far worse than simple failtooning or blocking because it is a coordinated effort to ruin the game for everyone else. It is also an extremely pathetic way to score 7 kills and makes me question the actual skills of the individuals involved. If any clan leadership from the above clans wants the names, I'm happy to share. These clowns certainly aren't doing your clans any PR favors. Pictures below.