Just don't do it in reverse!
Thanks Lucy!
Easy (and safest way) to free clutch:
Main gear lever in 4th
Transfer in neutral
Fire up engine with left foot on clutch and right foot hard on brake.
Push transfer lever firmly forwards into high ratio (gear is designed to go low-high)
Engine will probably stall, but clutch should free.
Try clutch for operation and repeat until freed. Can take a couple of tries.
DO NOT try this is 1st or reverse. These are the weakest gears in the series box and are easily broken....
4th is direct through the box.
Hope this helps.
T