The only thing I have ever noticed anyone rank whoring over is the "rank" list in chat. Basically what is mainly displayed in the stats page. (Which is not affected by suicides. A.K.A. Nuke on Atix.) If this one player chose to sit in spec and tab out to watch an episode of their favorite series, then that's what they just chose to do. If anything, they only hurt their rank whoring opportunity of getting an almost guaranteed win on the zombie side.