An early wreck during Stage 2 of the Iowa Corn 350 at the Iowa Speedway on Sunday caused tensions to flare between Noah Gragson‘s crew and John Hunter Nemechek. Gragson’s crew was hot after his car was spun halfway around by Nemechek during the second stage. Gragson was able to control the spin and straighten out before hitting anything, but a caution flag still came out and the contact cost Gragson several positions. The crew on the radio was not happy. “What in the f*** is wrong with him?” Gragson crew chief Drew Blickensderfer said on the radio. “That guy is the biggest moron in racing over…