Yeah. I think it's reasonable to assume that a prosecutor is not going to re-open a case that was closed years ago unless there's some reason to think otherwise. Especially when there are allegations that the prosecutor was bribed to close it in the first place.
Lots of thoughts, assumptions, and allegations. A perfectly logical standard of evidence!
Yup, that's all we can do when we don't have conclusive proof of something being true.
Most of your claims are assumptions as well. The only difference is you state you assumptions as if they are facts and I don't.