I have a theory about that [insert HBP spoiler thing]

usually don't do theories because I like to be right and there's a good chance I won't be, but this came to me this morning and I'm sticking it out here, long before Book 7, where everyone will have a chance to forget it if it's wrong, but I can still smugly link to it in the small chance it's right. ( Spoilery for HBP theory inside )