Resting would help you survive, especially if you had 1:1 frozen. :)
And it could be used as a spell, as well as an action by a new monster (see my Gorgon post).
Still unclear as to the difference between the terms "Freeze" and "Petrify." To me, Freeze seems more temporary - perhaps during a single multi-roll combat, you'd have to use the numbers from the previous roll. Petrify seems more long lasting, requiring you to use the same numbers with the next monster, until possibly healed by rest or a potion.