A "solution" for unraveling cigar wrappers? Maybe.
I grabbed my bottle of 50/50 humidification solution (50% distilled water and 50% polygylcol). The polygylcol makes the solution a little slick and oily. That's the key. I spread some solution on the wrapper leaf with my finger and the wrapper adhered to the cigar. I kept my eye on it for about 15 minutes. It was almost dry, and it looked like it was holding together with better results than plain distilled water or good ol' fashioned spit.
Now for the acid test - the relight. Surprisingly, the wrapper leaf stayed in place and let me smoke past the break point. I'm not certain this "cure" will work in every case, especially if the leaf has unraveled more than halfway around the cigar, but it seemed to do the trick for this minor instance.
I have also seen a wrapper repair kit advertised. It's a little bottle of pure vegetable glue (the same type of glue cigar rollers apply to a cigar's wrapper cap), with a brush that's attached to the bottle cap.
Has anyone ever tried this product or the method I described using 50/50? If so, let me know if it worked for you, or if you have a better remedy.