Yesterday I was at a pre-K playground with both kids, and heard my daughter crying, "Daddy! Daddy!!" in a panic. Turned out she had grabbed onto the (very low) monkey bars at the playground, and then was afraid to let go! (It was maybe a 2 inch drop.)
She's done this a few times now, and each time I've "rescued" her. I think that maybe it's time to practice dismounting from the mini monkey bars, so she doesn't get "stuck" again.
Does your LO ever hang from a monkey bar and then get afraid to let go?