Given your assigned role, would you have seen Galileo as guilty or innocent? 
Cardinal Bellarmine would have judged Galileo as guilty; Due to his earlier run-in with Galileo, <See Here>  and his statement describing how Galileo "abjured" from his teaching of the Copernican Method which "could not be defended or held" (>source<). If Galileo truly meant what he swore in front of Bellarmine, and renounced his wrongful ways, then his actions could only be seen as an act of dishonesty, and the devil. Therefore, he should have been chastised- though not burned. Even the best of people and intentions can at times be misled by the Prince of Darkness; Let Galileo plead guilty and come back to the Church's warm embrace. Let him face the Church's justice, and end this farce. After all, Bellarmine himself witnessed Galileo swear about the indefensible nature of Capernican doctrine- how can he support it now? Either way, he is a liar.