I don't think there is a story to be told here - WinModule2 is simply unassigned, and trying to reference WebModule2.AS_DLL_Session brings the AV. Capturing E.Message + ' ' + E.Stacktrace yields
"Access violation at address 0530971F in module 'wsode.dll'. Read of address 000000A8."

The question seems to be why it's unassigned, and if in an ISAPI module that's to be expected, how to access the non-visual component(s).

Bjorn