You should try and contact your friend.
Either way, you don't need to bypass the pin to flash a recovery or cf auto root via odin. Just get the phone into download mode.
You could also flash philz touch recovery via odin, flash the root zip via philz touch and use adb commands from philz touch to pull/push stuff. Also, doing a nandroid backup from philz touch will save important data and all apps installed.
The s3 bootloader isn't locked, so unless explicitly wiping stuff, flashing through odin won't erase any data.