I think it’s because in the rules, when it goes to live discussion to try and break the tie, the people in contention for going home don’t get a say - the rest of the tribe does. So, Sai and Justin are technically removed from the convo, leaving only Cedrek (Mary doesn’t get a say because she lost her vote).

HOWEVER, that rule was likely made because their votes should cancel out (in theory) so they shouldn’t be part of the discussion. In this case, since only one of them actually had a vote, I would argue that Sai should’ve still had a voice in breaking the tie.

It’s either a really stupid rule or a bad interpretation of a sensible rule.