How can btc be controled by Bitfinex if they only have around 10% of the trade volume and MtGox used to have the vast majority of trade volume in the early days(up to 80%)?
I agree with you here. I ready the whole spoofy story and agree that manipulation does take place in Bitcoin trading and has always done so... however I do not think that 1 exchange slavishly follows another especially when the one to follow is Bitfinex. As an example yesterday I sold a couple of Bitcoins on Kraken for £2800 ($3650), coins on all the other £ exchanges sold for around £2650. And are further down today... so no one followed that ath.
I don't see how this is comparable to mtgox in scale or ability to manipulate.