OH MY GOODNESS!!! How horrible. OK...since things have happened then I understand their rules. DS is reading over my shoulder and has corrected me that he had a CM clarify to him that he could wear the slim eye only googles that fit snugly around the head but they told him that the snorkling googles that cover the nose cannot be worn on the slide. I suppose those aren't as snug and I could see where they could be harmful with the examples you have noted. The swimmers googles don't seem to be easily moved on their own.