Or it might have somet to do with the train derailment & fire in Salford yesterday.
There are trains cancelled left right & centre going towards Manchester at present.
From what I can gather it was near Regent’s Road which I think is the track that (at some point) runs parallel to the M602 so whether it is also affecting trains that run on the Wallgate line through Salford Crescent & Salford Central I don’t know as those trains go to Victoria & not Piccadilly don’t they?