Again show me ONE quote from wikileaks or Assange saying he is going to retaliate. The guy voluntarily went into custody on the Swedish warrant and no one has released the password for the insurance file. Lots of political commentators want people to see the situation the way you describe it, but when you go looking for the evidence to support that viewpoint it is not there.
First it was "grave and irreparable danger" and now nothing at all.As far as the banks, there is nothing he could release that would change anything.