Spawnkilling is against the rules, and so is death evade. This video clearly shows Lucky trying to spawnkill (although lucky for him it didn't work). The video also shows dark6 death evading via /q.
imho, this video is enough proof for 2 bans.
This is how I feel about it. I won't make a decision until other admins offer their input.
Oh, and just in case dark6 reads this: if somebody is spawnkilling or camping at your spawn, you always have the option of spawning somewhere else. Just sayin.