this all assumes that the first insurance file is actually keeping the government at bay. i doubt that it contains anything huge.
after wikileaks was criticized for editing out portions of the "collateral damage'' video, assange explained that wikileaks entices leakers by assuring that their material will get maximum press coverage.
anybody leaking extremely damaging information would probably prefer for the most damaging elements of it to be released immediately.
if wikileaks does have damaging information though, clearly assange would be able to have it released piece by piece to put pressure on the government to free him.