If a person is not current in their child support payments, they are not able to get a temple recommend and go to the temple. Some men would rather give up the rights to their children rather than become current on child support that way they can still go to the temple. Crazy, I know but it does happen more than most people are willing to discuss in the LDS community or the off shoots of the LDS religion that do go to the temple. Most polygamous groups do hold the temple as sacred so this may be the case with Robyn's husband. She did mention that he wasn't paying child support.