I've been googling this but getting very little results, other than that Stan Lee Vanity fair interview.
What I'm looking for is an explanation of:
* WHY, in his solo title, did Ben start to mutate further?
* HOW was this resolved? It suggests it continues in the Avengers book, but he just ducks out of joining them, then turns up in the FF. It seems like a strange subplot that "fell between the cracks" of titles folding and editors changing.
The Fantastic Four issue does resolve it: the Mole Man cured him. It's just rather pat.