I won't go so far as to say it is impossible. I have never, however, seen any data to suggest that it occurs. And the valves I've seen that have failed due to detonation, failed due to weakness induced by high temperatures, not pressure or resonance induced forces.
If someone can produce some data that shows this, I'll certainly change my view. However, the poster above was just making stuff up and that won't change my view. :-)
Matt