LEGAL GUARDING POSITION

[shont]

Ball is in the corner. A1 on ball side block, B1 playing behind him and B2 fronting him. Ball lobbed to A1 who jumps in the air and catches the ball then comes down on B1, who was playing behind him, I call PC because B1 had legal guarding position before A1 left the floor. A's coach was very upset saying that defense HAS to let offense come down. Is this a case of legal guarding position??

Thanks

shont