Well this sucks donkey balls :/
Completely the opposite of who Celestia is, completely the opposite of what would happen, and completely the opposite of happy.
Even if that's exactly what they wanted, I'd still be ashamed if I had gotten it this accurate, myself.
"Celestia", boomed a deep voice within the castle, "From what I have witnessed, you are no longer fit to rule Equestria". "If this is how you treat your pupils, I fear what will become of the kingdom.
"Who are you", Celestia asked warily.
"I am the Guardian of Equestria's Past, Present and Future". "I have seen your future; if you continue down this road, you will die cold and ALONE".
"Therefore...you will be banished to the Everfree Forest and stripped of your powers". "I shall mentor Twilight Sparkle in her studies and run this kingdom until she comes of age; Then Twilight Sparkle shall take your place and raise the Sun and Moon until the 1000th year at the Summer Sun Celebration in Ponyville". "Now, BEGONE"!