It seems that is what Truthworthy is claiming, yes. But he also said that he does not mean that theists have to lose their belief in God permanently if they honestly question - only temporarily. TW seems to think that it's impossible to honestly question God's existence (or lack thereof) as a theist - and also simultaneously still hold the God belief. I don't see why this has to be the case at all. I hope I've pinned his view down correctly - and I look forward to reading his own response on this thread.
EvF
EvF