Have to agree with this. Whatever the real intentions of the player, the Guiseley manager had the responsibility to hold the collective hand up and accept that was against current fair play protocols (whether you like them or not) and let Braintree walk in a goal. It is totally irrelevant...
You clearly haven't seen the incident.
One way to stop the cheating will be that if the ref has to stop the game and the player then gets up he goes off the pitch as if he had been treated by the pyhsio!