Sarcs
When youve been in ATC for a while you know that youre only one sleepless night or arguement with the wife from having a really bad day. Thats why we dont get judgemental until the facts are known.
There may be systemic issues at play or it may just be a slip. These may even have some pilot error component. Airservices, for all its failings, does (IMHO) internal investigations pretty well.
Not been an apologist just being a realist.