I don't know what to say to that other than that I think you are watching with your heart and not your eyes. Thomas was distinctly smaller than Ben Wallace, who is only 6'9". He looked slightly smaller than Drew Gooden, who is about 6'8". The total number of big players in the NBA listed at SMALLER than their size is roughly zero -- no team, no agent, would tolerate that.
If Skinner was 6'11" -- probably about Brad's height, he would not be nearly so dwarfed against the 7-footers around the league.