Ah yes, thank you for jogging my memory!
Indeed the 2009 does have a mechanical diff / park breaks and does not suffer from the issue you mentioned.
For the R-Spec,
I have to retest but as I recall the solution is very simple, press the remote ON button (/remove the fuse), three lights come on ESC / EBS / ABS, but do NOT press the ESC button AND do not press remote OFF (/reinsert fuse)......
Voilà, you can do all the donuts you like and since the ABS and EBS are disabled during that time (i.e. the electronic LSD can not use the EBS), there should be no ill effects to your brake pads and rotors with the exception to perhaps your tires!!!...

(keeping in mind in this mode, other bits will also be disabled, the speedometer for example).
I am pretty sure that is how I got around it last summer, but again I to verify unless someone else (with better weather conditions) beats me to it!
Not unless you have a very good 275 summer rear tires nicely warmed up, with the ability feather the throttle to the max, all the while pushing the traction manually to limits of that particular tire set..
Otherwise you just sit there burning rubber with lots and lots of smoke..