Tami - No need to worry, that was stress induced.

When I go out and pick up wild snakes to photograph or just study, it is common for the stress of my invasion to induce a regurgitation.

The water must have spooked the baby, try feeding again another day, it should be fine.

I don't know about that 10 day wait, I had two babies that one had swallowed its sibling 1/3 of the way down, I ran them under cold tap water until the bigger one "coughed up" the sibling, they both ate several hours later with no ill effects. (I figure there could not be anything much more invasive than having a snake extracted from the throat)