Thanx Randomcreek. There is no button under the drive bay, however, there's a gearlike wheel. I think it's the mechanism to open the tray. Pushed it to the side (as if turning it) several times and it nudge the tray to open a bit. Then I pressed the eject button on the remote and out it came. Thanx for the idea, my friend. Cheers!
After having witnessed the mugging of a snail by a fellow snail, the investigating officer asked the DMP-BD30 what happened to which the BD player replied "I don't remember...it happened so fast."