I've noticed a few googlers showing up in the last couple days looking for "Joel Hemphill denies the deity of Christ" (or variations of that search string). I suppose you're ending up here, because I have brother James on my bloglist and his headline showed up here as well.
In any event, what you're looking for is at his blog:
Joel Hemphill Denies the Deity of Christ and the Trinity
07/08/2008 - James White