Grogg of the North
Adventurer
For what it's worth, the Book of Exalted Deeds touches on this a little bit. Generally it states that committing an evil for a good cause is, at best, a neutral act. And, after repeated neutral acts, it's possible to slide from LG to LN. Also, such thinking is abhorrent to anyone that would be considered exalted.
How do the other DM's feel about the Golden One? If there's a consensus about his alignment being violated, I'd give him a warning in game via a dream or something and if he keeps it up, I'd let him fall and fall hard.
How do the other DM's feel about the Golden One? If there's a consensus about his alignment being violated, I'd give him a warning in game via a dream or something and if he keeps it up, I'd let him fall and fall hard.