In reply to Carless:
Few months ago I asked my shop to put the Dynafit anti-twist plate on my TLT Speed Radicals (
https://www.wildsnow.com/13852/anti-twist-dynafit-speed-radical/), this involved removing the heelpiece altogether and putting the antitwist plate below the heelpiece.
I am assuming that before that the screws were epox'ied so removing the heelpiece involved unscrewing them somehow (and reusing the holes for the antirotation plate) - so in my case it seems it was done and it's possible.
Not sure if this will be the case with alpine bindings...
Cheers
RS
PS: I did that on my heavy myserystixes (Dynastar Altitrail Vertical Light), so I am guessing it should be even easier for fatter skis...
Post edited at 15:41