I missed that. Next time there's a show hit me up, I've been out of the loop for a while.
I see two types of healthy open relationships. Either two people are just inherently not monogamous and would never consider entering a closed relationship, or they're capable of being monogamous but feel secure enough with each other that they choose to open things up.
If you need to take sexual exclusivity off the table in order to trust someone, then either you're not capable of trust or they're not trustworthy. I think that any such relationship has some integral weaknesses and is unlikely to last.
I suppose my point is that an open relationship has to be truly mutual. If it's agreed to because one person is a slut and the other person is too scared to try to find someone more compatible, that's not gonna work.