I read this as well, and I when my band was playing heavily I boiled my strings on two occations where I didn't have the chance to hit the music store to get new ones.
My experience is that after about 2 minutes in the boiling water, wiping and restringing, they do sound close to new, as they are very clean. However, they seemed to lose some elasticity, and so if you slap and pop or play hardcore on them with a pick I would have to say your more likely to bust a string. After each show following the boiling, I replaced them because I could tell they felt more stiff and breakable.