Next Game's Official Interfering

[Treeguy]

Freshman boys. Less than a minute left in the game, home up by 30. V shooting free throws, hits the second, H1 passes to H2 who shoots at the wrong basket and makes, I believe done on purpose. V1 takes the ball, immediately throws it to V2 who scores. That did not look right, so I blow my whistle and had to think about what just happened. I realize that it should have been H's ball underneath after they scored, so I wave off the last basket and I go up to the table and let them know what I have. As I was explaining it, the official waiting for the JV comes up behind the table yelling NO NO NO saying V34 gets the basket. I don't think he realize I was just disallowing the last shot.

So my questions are;
1. Am I correct in disallowing the second shot? and
2. WTF?