Whatever the reason was, it may well be company policy in Easy (as it is in mine) to not state the nature of the problem unless it's a Mayday or Pan situation.
There are far too many people listening in on frequencies and what may be a minor technical problem can end up with one of the typical "jet with children on board plunges from the sky" type of misguided headline we have become all to familiar with. By stating commercial or technical reasons, these situations can be avoided.