If bill fried Freeh there is nothing Freeh could have done about it.
Sure, but firing Freeh would have looked horrible for Clinton's scandal-plagued administration, and would have risked arousing some in Congress and the media to pay attention. Freeh is saying he didn't want to give Clinton any easy way to appoint a new FBI Director, though who knows whether Freeh really wanted to resign or whether he was enjoying his time as the FBI's #1.... given the Clinton administration and Reno, etc. I doubt Freeh could have been enjoying himself too much!
That depends on what you mean. Freeh couldn't have gotten his job back, but he probably could have made it very painful for Bill Clinton.
If Freeh was smart enough to deny a free pass to the White House, he was most likely smart enough to keep physical (i.e. hard copies) of the evidence against his Chinese boss, Bill Krinton. (see my reply at 410. Trannie may have been an imposter, who knows. But even if he was, he makes some good points about Freeh.)