I hope the following highly predictable things don't happen:
1/ The traitor turns out to be a slave of Bombshell via the use of a cerebro shell. If so, perhaps they could make the shell some kind of malicious program inserted into the Transformer's core consciousness, like the Predacon Shell Program in Beast Wars (meaning that attempting to tamper with the program can result in death for the victim) - that would be neat instead of the old "Yoink it's out" solution.
2/ The traitor is Mirage.