Could be the loading basket gear assembly has cracked. It is not an uncommon failure on the VX VCRs. Cracks in the white plastic end pieces cause the cassette to not load or unload straight, and it jams. Part number is 2700011 , description is gearwheel VX3000 / VX5000.
The cracked end gears can be easily seen with the loading basket removed.
Ideally you should manually eject the tape by pressing eject and lifting both sides of the cassette evenly. Exchange of the gear is done with the deck in the unloaded position so as to not upset the mechanical timing.
Due to the possibility of mechanical misalignment, this is a job best left to a technician.