1) You need to base your decisions on what you or your colleagues have observed – and in this case you did not see the player himself remove his shirt. So call him and his captain together, and inform them both, via a public rebuke, that the behaviour is unacceptable. Make it clear that if there is a repeat, whoever scored the goal will be cautioned. Restart with a kick-off. Thanks to Phil Meier.
2) Quickly control the situation. First, send the home manager from the technical area and tell him he will be reported for his actions. Second, inform the away manager that there are no grounds to abandon the game, but that the incident will be included in your report – authorities may later decide to award his side three points or order a replay. Then, with order restored, play out the remainder of the match.
George Hassett wins the shirt.
3) As the two fouls occur simultaneously, you have a choice here. First signal for a penalty, then deal with the offenders. Both players are guilty of denying an obvious goal-scoring opportunity, but it was only one opportunity – one goal denied – so only one player is sent off. And, as the defender's challenge was clearly reckless, while the keeper may have been unlucky, the defender is the one who merits the red card most. Thanks to Dermot Drysdale