No, "blowing chunks" (slang for vomiting) is different than "blowing up"... the 4460 has a separate comparator that is able to reset the SoC if it gets really too hot.
It will crash colourfully before then is what I mean, unless one of these thermal mechanisms is helping. It varies by chip actually, some can idle at 1.2GHz for a long time before choking others crash in a few seconds.