Did it damage anything when it got loose? Will the drivetrain turn? Maybe take the plugs out, put it in 1st & give it a push. Just to see if anything is in a bind. There also some schematics on bikebandit.com. Might show if something else is missing.
Tapped from a Galaxy Nexus using Xparent ICS
Tapped from a Galaxy Nexus using Xparent ICS