Glad you found the problem and no-one got hurt. Have a Merry Christmas. The transaxle mount I recommend are the WEVO Boxster/Cayman Semi-Solid Transmission Mount - Black (2) from Windrush Evolutions Inc .if you want to get crisper shifting, as the engine and transaxle stop moving around in the car. I installed these 11 years ago in my 2010 Cayman S; what a difference.
go with Textar pads. Had them on my 987.1 they are OEM and don't fade. No noises. Only downside is brake dust but that's the sacrafice for great brakes.
Wow, I did not know that the rear disk has a drum attached for the E-Brake. That makes perfect sense as it will actually slow you down in an emergency, whereas my Honda Civic is only effective as a parking brake. People often use the word interchangeably ( E-brake for Parking brake ) they are in for a big surprise when they expect their parking brake to act as an emergency brake, while at least if they are driving a 2012 Honda Civic. I recommend everyone test their E-brake and or Parking brake while rolling in an empty parking lot to become familiar with its operation and capabilities. Those foot operated E-brakes or Parking brakes without the release handle are particularly challenging as it doesn't take much to lock them up, then forgetting that you have to step on it again to get it to release.
Given the price of new half shafts, plus the loss of grease you mention and recent driving symptoms - you should absolutely do a preventative refurb on the CV joints. I would not be driving that car if I had any suspicion that a CV joint might lock up and throw me into the bushes. Having said all that, the recent issue was clearly the brake shoe disintegrating and locking the drum.
Stop Tech make a great set of Perf. Pads Low Dust and no Noise . Their Rotors are also very good . Great iron castings with quality material to last longer . IMOHO
Copart accident photo was excellent to draw us into the video thinking you wrecked your Porsche. Excellent diagnosis on your cars brake problem. Great video as usual
I wouldn't worry about the CV boots unless they are torn. That little bit of grease seepage won't make any difference. As to using E85, you just can't put that in your tank and drive away, there has to be changes to fuel pressure and/or software changes. I am guessing your Softronic handles this? Great video!