What do you think of this situation?

My child wrestled this weekend at Valley Center. His first match was a very close one, could have gone either way. My child ended up pinning his opponent, third period. When the kid got up, he pulled his ankle band off and threw it on the mat. Then the official told them to shake hands and he slapped my son's hand. At that point this kids coach came onto the mat, grabbed this kid, made him pick up the band and place it on the mat nicely (the entire time yelling at him). At this point, my son is quit intimidated and our coach motioned for him to go ahead and leave. He started to leave and this coach grabbed my child and forced the other kid to shake his hand. The two boys then left the mat and that coach continued to yell at him, even threw his clothes at him.

I was uneasy about my child being out there involved in the situation but, angry that he laid a hand on my child. But, the person I was most concerned about was the other child! I did notice, that coach did not coach him the rest of the day. This child did not win a single match at this tourny, nor did he place. I do know that this child placed top 4 at Salina TOC.
Who's teaching who here? And if it was sportsmanship this coach was trying to teach, his approach was unacceptable! He's just lucky I didn't run out on the mat and get in his face for touching my child!