[greyhavener]

Boromir chose to give in. Aragorn had ample opportunity to seize the ring from Frodo but chose not to. Faramir resisted as well. All three would have acted out of the same motives. Gandalf explained that motive does not matter the ring cannot be used against Sauron.

Even those who at first did not recognize it's true importance and simply used it to hide like Bilbo and Gollum eventually were drawn to serve it rather than it serving them.

Gandalf might have had the power to use it, but look what happened to Saruman the White when he tried to manipulate Sauron to his own advantage. Gandalf recognized his own frailty even as the White.

Back to Boromir. He failed miserably with the ring. I agree that his repentance and the light around him are evidence that his failure was not his doom. Those who never fail (or have no potential to fail) require no redemption.