I figured out how to get rid of the backdooring. Do it like now 2 HOHs put up 2 house guests, winners come off and HOH removed in the BOTB. Except immediately the remaining HOH names one person to go on the block, so you have 3 on the block. Those 3, the HOH and 2 other house guests compete in POV. If one of the 3 on the block win they come off with no replacement, leaving 2 on the block. If none of the nominees win, 3 people left on the block. Boom no more backdooring. Lol