Wmos,
Your safety didn't lock it in the up position did it? There should be a metal safety tab on your transom, it may have locked in.
Next, try trimming down and pressing down on the motor yourself. I have a trim button on my motor so one person can do it, if you don't, you might need someone to help you.
You might be headed to the shop if that don't work.
Good luck. At least it happened at home and not 10 miles from the ramp!
topwater