I completely agree that if you want to take a major part in someone else's storyline, you should ask for consent first. Also, in this case, I think the character played is actually by now CCP's, so it amounts to playing a GM-controlled NPC character, which is a big "no" to me, without their express permit.
That does not mean, IMO, that it is ok to point and laugh, flame, and do blatant YOU ARE DOING IT WRONG, on this forum.