So, if Morgan had not touched the ball and it had gone straight to Alberts we would have scenario 5 above ....Alberts would have been offside and no try?
No try, and PK to England for offside in general play by Alberts. He was not put onside by any of the criteria under Law 11.3
It would have taken quick thinking and courage for Morgan to have left that ball. He may not have had any idea that the ball came forward of a Springbok player
What if Morgan had touched the ball, but not 'intentionally'?
No try, and PK to England for offside by Alberts. Only an intentional touch (playing at) the ball puts Alberts onside under 11.3
[LAWS]11.3 BEING PUT ONSIDE BY OPPONENTS
In general play, there are three ways by which an offside player can be put onside by an action of the opposing team. These three ways do not apply to a player who is offside under
the 10-Metre Law.
(a) Runs 5 metres with ball. When an opponent carrying the ball runs 5 metres, the offside player is put onside.
(b) Kicks or passes. When an opponent kicks or passes the ball, the offside player is put onside.
(c) Intentionally touches ball. When an opponent intentionally touches the ball but does not catch it, the offside player is put onside.[/LAWS]