ive never seen what youa re talking about at all. ususally if i have a small crack in my cigar a little saliva will fix it. however, i almost never get a big crack in cigars because i store them with the cellophane on them. its a bit of a protection thing. the only time ive ever seen one that is serious was when a friend of mine sent me a cigar through the mail without the cello on it.
im thinking that inside the bottle is some sort of vegie oil based "glue."
Personally i would never toutch the stuff. the way i look at it is anything i add to the cigar will take away from the flavor. something as fussy as a cigar shouldnt have anything added by me. If the wrapper is just a bit cracked then i try to smoke it as is im just very careful around the cracked part. If the binder is cracked its done for. (most of the time) I find that once the binder is cracked the added heat will make the cigar expand and crack the binder even more and eventually the cigar will unravel.
I just try and be very careful to not dammage my cigars.