I mentioned Rob Bell’s pro-gay statements to my son (he’s more informed about the emergent church movement than his dear old mom is)...his reply, “Who didn’t see that coming.” He echoed your sentiment that Rob Bell’s been “off the reservation,” theology wise, for a long time now, and these latest statements were inevitable based on his previous move away from theological truth.
Your son was exactly right, who didn’t see this coming. Once you eschew Biblical inerrancy on one issue, you eschew it on all of them.