there is no organization responsible for this event, everyone except the people participating knew what was going to happen, so they were prepared. if you've ever seen the st clair river on a weekend, its no walk in the park, boat traffic alone kicks up 3ft waves on a calm day, not to mention the shipping freighters that come through.
they were all shipped back across the border via city bus with police escort. being from Sarnia, and seeing it first hand, its similar to that of float your fanny down the ganny, but with no safety measures.