All his stories were posted July 24th, 1999. There is no email listed for Warthog on SOL. A visit to the internet found some of his stories at other sites, notably ASSTR. That site says:
"The Warthog Story Page
The Gang Bang Virgin Series
The Slut HouseWives Series
The Company Trip
This page is maintained by The Warthog. All comments may be sent to email@example.com"
Additional research would be needed to see if there are more than 27 stories available on SOL elsewhere. The ASSTR story files were entered there all on May 4, 1998 except GBV.htm and GBV.zip which show November 5th 1998. The Company Trip series shows they are by Peggy and The Warthog. I suspect The Company Trip stories are not on SOL.