I don't think MAN has suffered particularly badly in recent years with de-icing (in terms of aircraft de-icing). It's usually been runway closures and similar.
In all fairness the de-icing crews from Swissport/Airline Services usually do a fairly decent job given the resources and logistics of it all
I do hear whispers that there were a lot of overtime refusals on Friday that may have contributed to the delays?
But hey, if you treat your staff like
with zero hour contracts and the like