I need to delete a prezi, but it's on an account that I don't remember the email or password to.

I made an account and a prezi a long time ago. <http://prezi.com/xgyitiffbis-/?utm_campaign=share&utm_medium=copy&rc=ex0share> I tried to long on to delete it, but I don't remember the email the account was under and therefore can't long on. I really need it deleted for privacy reasons. Is there any way it can be deleted if I don't have the account information?