Well, no.
Both were educated guesses
A. The Chinese thing was completely unresolved, and that's easily the best bet to avoid getting discovered (if the honchos above Logan didn't want to have blood on their hands) while getting rid of the Jack Bauer problem. They said, the first 15 minutes will be intense, and the last 15 will be even more intense
B. There's no way that Jack wouldn't have killed Logan if he didn't feel Logan would be brought to justice another way. The microrecorder is the easiest way for him to do that. He pulled out all the stuff for a reason.