That's at the high end of the re-hydration range, but you are more likely to have an explosion than dead yeast. If you haven't done so already, slowly cool it down to the proper range. Otherwise, it is likely to stay hot & make nasty.
Remember one unassailable statistic, as explained by the late, great George Carlin: "Just think of how stupid the average person is, and then realize half of them are even stupider!"
"I would like to die on Mars, just not on impact." Elon Musk