http://mustangsdaily.com/blog/wp-content/uploads/2010/09/tsb10-19-04.pdf
Some 2011 Mustangs built on or before 4/25/2010, with a manual transmission and low mileage, typically 10,000 miles or less (16,093 Km), may exhibit a clutch pedal Stayout condition at very high engine RPM. This condition will generate a concern of the clutch pedal remaining on the floor during high engine RPM shifts. When engine RPM drops, clutch pedal operation returns to normal, but the re-engagement may be abrupt.
Some 2011 Mustangs built on or before 4/25/2010, with a manual transmission and low mileage, typically 10,000 miles or less (16,093 Km), may exhibit a clutch pedal Stayout condition at very high engine RPM. This condition will generate a concern of the clutch pedal remaining on the floor during high engine RPM shifts. When engine RPM drops, clutch pedal operation returns to normal, but the re-engagement may be abrupt.