Yes, the heat took the temper out of the steel spring and the metal became malleable again. When I was a kid my grandad had a forge and used it for making and repairing ranch equipment and tools, I loved to sit and watch him shape steel when it was glowing orange on the anvil.
And, several times, I have laughed at grandkids and their friends while roasting wieners and hot dogs on steel coat hangers. When they reach across the fire to put their food over a "perfect" bunch of coals on the other side, the main fire "wilts" their hanger -- and their food "droops" down into the ashes... '-)
"Truthers" fit the "I slept though fifth grade science class" category...