The person who 'saved the airline a fortune in IT costs' has now cost the airline a fortune in operational costs and loss of reputation. I would hope they have now saved the airline more money by being removed from post.
It would appear that airlines whose entire operations are managed by computers seem to think that the IT costs of maintaining a resilient fault tolerant system is a wasted overhead and should be skimped on. The result as several major airlines have found in just the last year, are worldwide crashes and inability to recover from Irregular Operations at costs far exceeding that of the entire IT system.
The beancounters who propose and/or approve such 'cost savings' should be told that their continued employment and retirement benefits rest on the continued faultless operations of the IT systems they wish to save money on. That might concentrate their minds a little.