"The following are the preferred declensions:In his list of irregular verbs, however, he has the order reversed with "wake woke woken (or waked)".
wake > woke > waked (or woken)
awake > awoke > awaked (or awoken)
awaken > awakened > awakened
wake up > woke up > waked up
...For the past participle, AmE prefers waked; BrE prefers woken."
So there it is: it's Garner who gets it wrong, athough not nearly as emphatically as all that.
June also pointed out that I was lax in my own homework. She hasn't started writing a column; the column is established. It is the book that is new. Mea culpa.