If the ocean were high 158 F, this is not the same as the average ocean temperature was 158 F, nor that average global air temperature was 158 F. If the ocean temperature were on average 158 F, then you would indeed have steaming oceans [water at top hundred feet could be near 200 F].

What could you similarly say about today's present oceans as far as how warm they can be? Somewhere around 90F?
Certainly, one could say 80F: "Sea surface temperatures must be at least 82 degrees Fahrenheit (28 degrees Celsius) for a tropical cyclone to develop and maintain itself. "
http://www.nasa.gov/mission_pages/hurricanes/archives/2006/sst_clues.html

Or said differently if our present ocean was never above 80 F, then there would never be any hurricanes.