There isn't much on my part to address. I'm fine with letting his original statement speak for itself. I don't have to try to say he meant something else than what he quite clearly meant.
I would respond to this part of your post..."And even if there had been improper motivation such motivation in bringing a charge does not, per se, mean somebody is innocent of a charge."
Improper motivation is another way of saying the gop was interfering with an election. That is against the law besides being immoral.