once the Emperor and guards/blades leave the cell go over to the gate and stand in the left "corner". push the "Q" button so you are always walking. then keep pushing the space bar and watch your character step forward and jump off the wall backwards a little. don't worry about your stamina. it doesn't matter for this for some reason. but hey i just threw in casting the "heal minor wounds" spell to work it up too. so there we have it. 3 in 1. so to speak
if this is old news then sorry for the troll. lol. if it's new news then have at it folks