I've had the pink teddies about five times now, and they've been totally fine and fully enjoyable. Mates really like them, too. I'm assuming someone came up hard and freaked out, and they were taken to hospital as a precaution. It doesn't say there was anything actually wrong with them, or how many they took.
Just read that pink teddies have been tested at 220mg of MDMA, and nothing else.