The #60 Acura ARX-05 was second for the restart after the fourth full-course caution of the race, which came early in the seventh hour when the LMP2 class-leading #11 TDS Racing Oreca of Steven Thomas picked up damage in an incident at the Bus Stop chicane.
Castroneves lined up alongside the #31 Action Express Racing Cadillac of Pipo Derani when the race when back to green, but locked his rears and spun as he looked for a move on his fellow countryman, dropping the #60 car down the order - but crucially still on the lead lap.
