Does the PTO work? If not it could be that you chewed up the splines on the Torque Limiting clutch. One way to be sure is to check the oil pressures out of the SOS, the manuals will show you how. The TLC drives the front pump and with no oil pressure the transmission is in Park.
There is a lever that disengages the final drive. On later models it is on the right side about where your heel is. You may have to rock the tractor back and forth to disengage but that is the only to move the tractor.