I think its only provable that the Dev owns about 84 of the roughly 330 nodes of which about 240 are enabled.  So he owns about 1/3 the active (enabled) nodes.  The issue is the lack of votes from other masternodes, on average only 130 of the nodes vote on a proposal, so in that way he does in fact own 2/3 the voting nodes and enough to personally skew any vote how he wants (since if everyone that normally votes voted the opposite, the dev would have net 38 vote lead sufficient to pass a proposal since our coin requires a net 10% to pass).  The response is to have more people voting, as he does not hold even close to the majority if the rest of the community acted in concert with each other.

I personally think what he did (pre-selling) was in the best interest of the fund but was handled incorrectly and should have been explained and approved in advance.