Jim, I guess the "unless the act is wilfully or wantonly negligent." is what caught my eye.

To me, this means "failure to render aid" or simply walking away, which is wilful negligence.
When I taught diving in the 80's we were told/warned of a story about an instructor in California who got sued by the mother of a drowned girl...whom the instructor revived. He had to remove her swimsuit top to administer chest compressions. The mother charged he exposed her to "all those on-lookers" against her will.