What I witnessed was not booing but cheering. If I remember it was mat 12, a backside elimination match between a TOHK and Hutchinson wrestler. The Hutch wrestler came from behind late in the match to win a exciting match. The large group of Hutchinson fans were seated behind mat 12(The whole group).
They cheered when the Hutch wrestler reversed the TOHK wrestler to his back as time was running down to win the match.
I did not witness any booing till after the match was over and the wrestlers left the mat. I did see the coach motion the section(Dont know if he fliped the finger) and walk away. I dont think anyone in this case was rooting against the TOHK wrestler but rooting on the Hutch wrestler. Any booing came after the match was over.