His knee is trapped between the door and the steering wheel when he releases the clutch.
Why? He has long legs like me and that huge stock steering wheel.
There is not enough room between the wheel and door (handle).
As I recall, If you have a pony interior this really gets bad since the handle sticks into the interior further.
The first time I came upon this I couldn't release the clutch and ended up opening the door a bit to use the clutch!
I've had issues all of my life with nothing being made for those of us in the 6' 5" territory.