I'm not sure what Leatherman is doing in this thead about Serino and Baez, but how does an association with Jeralyn discredit him?
Leatherman discredits himself.
Leatherman, in his blog, does all of the things Jeralyn is very strict about disallowing in her forums. He lies about evidence and attacks the character of GZ, among many other things. I suspect any interaction Jeralyn may have had with Leatherman in the past was peripheral and/or not long lasting.