Is Sen. Rockefeller the leaker?

A J Strata has a post on the possibility that Rockefeller is being investigated in the leak probe. As AJ points out, a powerful senator has no excuse for going to the press when he has so many ways to address his concerns legally:

This is incredibly bad for a Senator who is the Senate Leadership. It is not like Rockie has no other avenues to air his concerns and effect policy! A US Senator is very powerful, but a ranking member on key committees has tons of clout to effect policy. So there is no excuse for running to the press - especially when there is a memo circulating from said Senator about a plan to take down the President using misinformation and the press.

Can you say OOPS!, senator?