I have seen this many times , especially in the Quickie Tournaments , one player through lack of brains , upset with the way ptr has played or themselves , or in some cases it seems , just a desire to cause maximum confusion when holding tricks will concede . I'm not sure there is a solution , well apart from the obvious one of drugging them and forcing them to go on a Re-education course for a couple of years . Perhaps BBO could add it to the list for a future look at .