If SpiralRock is vouching for you then you can't be all bad. I'm also confused by the number of people who think that playing in a deathmatch server and not killing people in the clan you want to join is "backstabbing."
I have to agree with Charley though — you applied too soon after your last application, so I'm voting no for the time being. I'd still encourage you to keep playing with other members and wait a bit longer, though I have no idea what a good timeframe should be in this case.