I thaw directly in warm/hot water, usually takes 10 minutes or less.. and I really don't use very hot water at all. I do use a big cooking pot, so the volume of water is larger (and the water doesn't give up all its heat too fast).
Nothing wrong with it, a little extra water isn't going to hurt your snake.
I've only had bursting issues with faster thawing with crappy feeders. Monster feeders and rodent pro have never exploded on me, rat pinkies to larges.