Revenge is Confusion is Magic

"Uh... Guys? Are you ok.... Wow... Where are we? It looks like we're in the centre of Ponyville. But why...?"

It's not like we've gone back in time coz otherwise we would be able to see ourselves... But hey. Couldn't hurt to ask, right?

"Twilight.... Have we gone back in time darling, this reminds me of when Nightmare Moon came on your first Summer Sun Celebration... We couldn't have travelled back to that time? Right?" "Sorry, I'm not quite sure Rarity... But something seems wrong... Something is different... I just don't know what it is.... Huh!? The clouds are moving on their own... Odd... And the sun is setting but the moon isn't rising.... We must tell Princess Celestia at once! Huh? Why can't I send this letter?"