Block/Charge explanation.

I am in my third year of reffing HS games and have actually gotten into playing in leagues this winter. I came across this last night in Rec game that I was playing in. There was a close block/charge call that the official called a block. I wasn't quite sure that I agreed with it so I went over to ask the official why he called the block instead of the player control foul. I was expecting to hear that he didn't get position before the player left the floor or before contact. However, here is what the official told me: 'It was a block because he fell to the side instead of straight back.' Has anyone ever heard this explaination before. Just thought this was interesting interpretation of the rules.