Clutch Slave Cylinder DIY problem – Help please.

[BoxsterBob - CA]

I will try the manual bleed today. The clutch was working fine (for 140k miles) and I don't drag race, however the odds that some fluid has got in the bell housing could have tipped it over the edge. All the bleeding so far has been by the book, the fork is in the right position, it just appears to be frozen.

Is there a way to bypass the clutch sensor to start the car? I thought I might try starting the car in gear with the wheels in the air just to see if it gets the clutch bits moving inside.