clutch master slave pedal

So, I have had this '95 ranger 2.3 5-speed for about a year... just replaced the cylinder head this week. I finished it up today and took it for a test drive... The engine runs great, but I shifted gears about 6 times during the test drive and suddenly the clutch pedal stuck in the up position...

Hello Ranger forum. New member here. Joined to ask for help with this issue! I was driving my 2002 Ranger 2.3 5MT and the clutch suddenly locked in up position. This truck has unknown mileage- it has an instrument cluster from a salvage yard. I will say that the pedal box is quite worn out...