That is one dangerous strategy. To get filled on 6000+ contracts when all you really want is to do flip 100 contracts. I don't know why some traders feel like they have to manipulate the market in order to make money.
Basically he used to make money by showing massive bids and then reversing catching longs who went with it, reverse for short. In the book Day One Trader http://www.amazon.co.uk/Day-One-Trader-Liffe-Story/dp/0470741732 , the author claims that flipper has actually received quite a few death threats from the floor locals whom he used to flip.This was after Rotter's identity was made public and he attended some function at LIFFE. Cheers.
I knew there were many who vilified him, but really that's pretty clearly a case of blatant jealousy that he found a way to beat the market, and it was totally legal. I respect him like I respect the math wizards who figured out a way to beat the casinos. I salute him for his success. He always came across like a good guy from any firsthand account or interview I'd read.