Slapping the backboard

[rbruno]

Gentlemen

AAU Tourney yesterday 16U. Good game. Player A-1 drives to the hoop.
Gets fouled in the act and my partner (lead) calls the foul. Ball goes in... although neither of us sees it go in. I know .. its my call as trail. I'm preoccupied with Player B-1 who slaps the backboard pretty hard after the shot.
I lost sight of the ball cause I was trying to quickly decide if I should "T" him up for the hard slap. I didn't call it a tech for slapping, but now I don't know if the ball went in or not.
Everyone in the gym must have seen the ball go in . I check with my partner and tell him "I didn't see it go in, but that I had lost sight. I thought if I didn't know it went in then we can't call it so.
Two questions on the rulings. We eventually checked with the table (They said it went in) and ruled a made basket with one free throw.
If I had blown the technical for slapping the backboard ..... do we still count the hoop with the foul?? How do you rule this mess?