Sure you can defeat it and destroy the rear wheel but most thieves aren't going to do it simply because they want a bike they can either ride away in after snipping the lock or being able to flip it fast. They aren' going to want to dump 200+ dollars into getting replacement parts so they can re-sell the bike.
If they want to do that, fine I guess... but when I go crusing and looking at locked up bikes, at least half of them use cable locks that can be easily cut or u-locked through the top tube. Those are much easier bikes to take, and have a higher 'profit' margin for them.
To answer the original question now.. defeat is simple and he says so how to do it on the same page.
A pair of good sized bolt cutters will chew through the rear wheel pretty well given a couple tries.
If your bike is that expensive though, I'd probably not lock it up unattended.. Those are what beater bikes are for
