New to Prezi. BIG PROBLEM need HELP !!

Newby problem. This is my first time on Prezi and thought I was going OK until about an hour ago. I am not sure how but all of my work is now zoomed in so far Prezi will not allow me to access of modify it. This is a group uni presentation that I am responsible for so I am in a real bind as it is due on Monday. The url to the prezi listed below and would eternally grateful if someone could help me fix this problem, Thanks Matt
http://prezi.com/tzf0_u_vtymd/edit/#0...