They did this after the cards were shown.
I don't think this changes the EV at all - I think it only changes the variance. Lets say the pot is $100. Say Eli is a 3 to 1 favorite. If this hand is only ran once....he wins $75 on avg.
Now, if you run it twice instead. Eli has a 3/4 *3/4 chance to win the $100. A 1/4*1/4 to lose the entire pot. And a 6/16 to win once and lose the other to chop the pot and get $50 bucks back. So in total his EV = 9/16 *100 + 6/16 *50 = $75.
When they run the hand twice...they only win the entire pot (what's already all in)....if they win the run twice. THey don't win double the amount in the pot.
Edit - more specifically, lowers the variance.
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