Hi Babmboo.
Try taking the unit out.
Then pull all the plugs off fro 10 minutes.
Push them all back on, and see if it auto ejects then.
Apart from that, you may need a trip to Toyota.
or if you fancy a "dig around" open the unit up, perhaps you have pushed a second DVD in there inadvertently?
If the first solution didn't work, I would be inclined to open it up, and see whats jammed.
Gra.