Clutch shudder at takeoff

[ppbon]

... a RMS leak, not an IMS Bearing leak.
The Rear Main Seal seals the main engine shaft where the flywheel and clutch are mounted.
Check under your car and see if you have oil collecting in the center of the engine.
If you have a bad enough RMS to cause clutch shudder you need to repair it soon or you will also have to replace the flywheel since petroleum products damage the dual mass elastometer in the flywheel.
Happy Boxstering,
Pedro