Is this where basketball politics come in?

[WeekendRef]

refTEN ,
I don't have the rulebook here but you don't need it....the end line is out of bounds . Think of it in another way....if the player was inbounds and stepped on the line he would be considered out of bounds . Now just reverse that logic and you have your explanation of why it is ok to step on the line when you are OOB .
A partner of mine called something similar last week (throw in)and was quite emphatic when he smacked the floor and said "stepped ON the line.....Blue ball". Nobody said a word to argued with him so I kept my mouth shut....would anyone have done differently ???? I did mention this to my partner after the game and initally he questioned me on it until we talked a little about it .
I am sure someone will quote the rule book for the out of bounds....