Spot on call. He should've been paying more attention to the flight of the ball BEFORE weighing up his options rather than just making assumptions.
To say nothing of the 10m Law
If you were thinking that the player who played it, or indeed any of the players in front of the player whose head the ball bounced off, were offside under the 10m Law, then no that is wrong.
The 10m Law only applies when the ball is
kicked ahead. The first paragraph refers...
[LAWS]11.4 OFFSIDE UNDER THE 10-METRE LAW
(a) When a team-mate of an offside player has
kicked ahead, the offside player is considered to be taking part in the game if the player is in front of an imaginary line across the field which is 10 metres from the opponent waiting to play the ball, or from where the ball lands or may land. The offside player must immediately move behind the imaginary 10-metre line or the kicker if this is closer than 10 metres. While moving away, the player must not obstruct an opponent or interfere with play.[/LAWS]
The 10m Law never applies when the ball goes forward off a player legally but not kicked (as in bouncing off a head or chest, or after a charge down) or as a result of an infringement such as a knock-forward or a forward throw.