As the nominated commander of the aircraft with the paycheck comes responsibility and accountability. Whatever goes wrong during your tour, at the end of the day the buck stops with you.
People make mistakes, that's just how it is. Go to Lisbon for your tea & no bickies session, put your hand up and say "we cocked up how do we learn from this" and move on. By pointing fingers or making excuses all you are doing is digging a deeper hole for yourself.