If Arun and Natalia actually get eliminated in leg 3 and then don't return for the Restart I'll be very surprised.
At this point my personal speculation is they do get eliminated, but then come back for the Restart along with Michael and Moe.
Exit interviews by the press from the eliminated teams is being held back until after the airing of the fourth episode, which is the Restart episode. So it makes sense that CBS is making the press wait until then because the eliminated teams came back to the race to replace the dropped out teams. Elise was hinting towards something in interviews how two teams were eliminated pre-shutdown, two teams then dropped out, leaving seven. But she said production came up with a way to solve this problem without adding more non-eliminations. Obviously she wouldn't outright spoil that "solution" to the problem, but just bringing back the two eliminated teams seems like an easy solution, at least that's what I'm leaning towards imo. It also lines up by if 7 teams return + 2 of the eliminated teams = 9. Race to the final 3 with no non-elims is 10 legs, which is what the schedule for the rest of the season is, according to futoncritic.com.
Just my opinion!