Hector did not lose his faith over Doctor Bart Ehrman, Heinz had other issues going on with his life. Dr. Bart Erhman's works were not new, Bruce Metzger crossed the same river Bart did fifty years ago without heading into the media spotlight claiming he found something new. The public is too stupid to read up on historical facts realizing Metzger (more liberial than Erhman) put everything out there decades before Bart did. Heinz also read up on Wallace's arguments too, something else lead Hector away from the Faithful Slave.
Greg never wanted to start a group of his own, Greg pushed for everyone to study the Bible themselves and think using their own brains. Hal Fleming and Heinz never had a chance trying to discredit Greg's "Three Dissertations", Hal Fleming is a bore and nothing more! He enjoy's blowing his own trumphet and loved to hear himself speak with great authority at the Kingdom Hall.