Nick....awful story. And you made the right decision; it isn't worth risking a leg, arm or worse for a lens. One is replaceable, the others are not. Replacing swamp water with distilled water makes sense, but first on my list would be calling Canon themselves and see if they have guidance. I've never had something repaired, but this seems like a good place to start (http://www.usa.canon.com/cusa/consum...onsumer_repair or 866-510-1335).

Good luck this morning and let us all know how it turns out.