ok, you said the throw was short and you pulled up the clutch peddle, I am pretty sure the clutch master has a finger that the adjustment screw part hooks to.
I am thinking that you pulled the finger out to far and it is hooked or crooked into the side of the piston part and now holding your cluch half way in.

look at your cluch slave and see if it is sticking out along ways.

umm even if it isn't you still may have the master pushed halve way in already check your linkage under the dash.
or pull the master back off and look.