yeah rippetoe talks about this, too, in starting strength. "spreading the floor" has been a good cue for me in the past when i feel myself being a unstable.
btw i just realized that starting strength is currently the 741st best-selling book on amazon, which means it's selling something like 800-1000 copies a month. rippetoe publishes the book himself, so he's probably netting like $10k/month just on starting strength sales. not too shabby, especially if you live in BFE, texas.