Air Contractors are the equivalent DHL airline in Ireland. In fact two of the Belgian registereds A300's in use by your airline are in fact leased from Air Contractors. So they could easily be sent back to Air Contractors. I imagine these are the aircraft referred to in the threat. Whether Air Contractors could take up the slack in the event of a strike is another matter.
I worked for Air Contractors for a time and there was a good deal of coordination between them and EAT in terms of scheduling and maintenance due to the DHL connection. Don't know how true that is still.
Don't know anything about the strike issue in EAT but if it all goes wrong maybe you could get work with Air Contractors.
Hope that helps.