conditional SNAT

I believe that did it!

Assuming you have a pool setup with some servers you want to SNAT on and others you do NOT, and your virtual server is setup to SNAT ALL (in my case, autosnat is setup), then, here is the new iRule:

when LB_SELECTED {
   if {[IP::addr [LB::server addr] equals "[insert server in pool you do not want to SNAT for here]"]} {
      snat none
   }
}

From my initial testing, that seems to do the trick!!

Thank you, f5, specifically unRuleY.