Now, Now, Now -- on the surface it might seem that he knows perfectly well what he's doing what with the usual "gee, I just happened to run across this site and thought I would share it" ploy. But on closer inspection you have admit he just didn't know enough about this to be held accountable for his actions. After all, only a total nitwit would use his own email address where he is listed as the administrator of the site. Give him a little time and we'll be seeing this spam with the proper forged addresses.
Got to admit he's got eclectic tastes too. Horses, woodturning, winemaking, textiles, recreational drugs . . .