I think his reports of becoming a deist/theist/agnostic are overstated and a bit exaggerated. There is also a Stand to Reason broadcast from a few months ago during which Greg Koukl interviewed Gary Habbarmas (sp?) about his conversations with Flew. From Gary's testimony (which is favorable to Flew), Flew keeps flip flopping between believing in some non-descript, undefined universal power and not believing anything.
As is usually the case, the evidentialist/Natural theology crowd take Flew's admission in believing some vague "power" as proof that evidence can be used to bring people to saving faith, even though Flew still rejects Christianity as being immoral and reprehensible, especially that atonement stuff about Jesus covering people in blood and that eternal, conscious punishment in hell thing.

Fred
www.fredsbibletalk.com

"Ah, sitting - the great leveler of men. From the mightest of pharaohs to the lowest of peasants, who doesn't enjoy a good sit?" M. Burns