Rooty was 34th while limping around. If he finishes the race limping around he is still in the top 35 in points.
Well his car fails him with 3 laps to go (also adding more laps to complete the race)
He is now one point out of the top 35. Ironically it was his teammate that passed him for 34th, which knocked him out of the top 35 in points. Now if he gets off the track the lap he says he was trying to get off, then they only run 500 laps & he is still in the top 35. Thanks to the extra GWC, Blaney passed him for position with those extra laps. If Rooty doesnt complete the last lap that he did complete, then he would have lost another position to kyle.
34th Blaney 439 laps completed (of 515 laps)
35th Rooty 436 laps completed
36th Kyle 435 laps completed
Rooty one point out of the top 35.
So there is the reason he did what he did, & why it was so important to his team. I cant really blame him for that.