use tinyumbrella to kick him out of recovery mode and into DFU again, then you can go google a downgrade solution which uses a hosts file method, it will sign the 4.3.3 firmware for you instead of apple, but remember to revert host file if u want to upgrade your other iproducts

oh... he mentioned its 3g model

"Note: iPad 2 (3G models) are not supported on this tutorial as its baseband can't be downgraded so far."
damn them for updating the baseband along with the jailbreak fix
unless we can make a 4.3.3 which runs a new baseband and create a server to sign it