The fifth person who hung out at the home where three friends were found dead hours after watching a Kansas City Chiefs game broke his silence, vehemently denying the theories that he was the last person to see them alive. David Harrington, 37, Ricky Johnson, 38, and Clayton McGeeney, 36, were the trio tragically found dead two days later in the backyard of friend Jordan Willis’ Kansas City rental, where the five men had gathered to watch the NFL team’s last regular season matchup on Jan. 7. An attorney for Willis — an HIV data scientist — initially said that his client said goodbye to his fri…