"The hands and arms of all players, including the goalkeepers, are not considered. For the purposes of determining offside, the upper boundary of the arm is in line with the bottom of the armpit."
Didn't check the FIFA rulebook, but the above FA rule should be the only and most sensible answer to the previous offside question.
Once again I'm completely out of touch with the rules because I do not see how your arms/hands can be offside when any touch with the ball via hand is against the rules henceforth making it a moot situation.
Football has become very foreign to me.