The drag away solution would be to proceed to Portarlington and off load the passengers to the Dublin bound platform, train would then reverse into the up loop for later recovery
The Dublin bound platform is the best as if the train gets stranded in there its not a major problem to work trains around it, which isn't so practical in the Cork platform.
All the driver has to do is to ensure the gearbox is disengaged on all defective coaches to ensure its safe to drag. In contrast the evening commuter train suffered a uncontained engine failure near Skerries 5 year ago, with bits of the engine ejected into the countryside it managed to drag itself unaided to the next station with less than an hours delay
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