Were you a drama major? (or am I giving you too much credit to assume you actually graduated from a college--any college?)
(85.48 - 72.90) / 72.90 = 17.26%
I'd say it was a combination of shorts scrambling over themselves to cover along with some retail "investors" going long that caused the early AM spike, not Irwin's words (or others; quite a few spoke on the call).
"Weebles wobble but they won't fall down!
Sure the shares may have gotten ahead of themselve; big whoop.