Michael's story is unraveling quickly. All that is needed is perhaps another month to have enough evidence to slap a murder 1 charge on him. After that, nobody is going to second guess any decision that turns out to be the right one.
Also, Jeb is out of office in 2007 anyway. He cannot run in the next election. And those of us who value life will never forget what he did... if he acts to save Terri.