Maybe I've misunderstood pier's blind defense writing, but being in the small blind headsup isn't really applicable, I think.
I think he describes more about defending your blind with two live cards very aggressively in the big blind against LP raisers. In example of this with your hand might look like this.
Dealt to me [[Jh]
]
(bunch of people folding), Button raises, small blind folds, hero calls.
Flop
Hero checks, button bets, hero raises, button calls.
Turn
, hero bets, button folds.
Now if the turn comes with a face card (especially an ace) and you get popped, it's time to go home and wait to fight another day.
Basically defending aggressively against LP raisers (especially people who raise in LP, a lot) with hands unlikely to be dominated (Defending with say K4o or A2o is more likely to get you into trouble, than say low suited cards, connected or not.)
Now against the small blind, unless he usually gives the blinds to you, I'll play anything.
If the small blind has folded to me a few times on previous orbits and then suddenly raises on the 4th time, I'll usually give it to him unless I've actually got something.
On the other hand, I'm not piers... I'm just a poser newbie. I suggest you go find his posts.