It's part of Spartan Race to do your burpees if you didn't succeed to pass an obstacle. But no Spartan lets another Spartan behind.
So you can share your burpees with fellow Spartans in the "Burpee Area". You can share with team mates or any other fellow Spartan in the race.
Important: This rule is only for the open heat.
The elite and the competitive participants have to do all burpees by themselfes without help.