As badly as they lost some would say that appealing shows that you are true to your convictions and believe that the courts have treated you unjustly. Afterall its no use making a press announcement stating how you were unfairly treated etc if you don't bother appealing. An appeal also takes time and Ryanair will be hoping that in the intervening months it all dies down a bit and any anxious auditors/shareholders etc will forget the whole thing - assuming that they really cared in the first place anyway.
Be interesting to be a fly on the wall in the boardroom though. There have been many commentators that have said that MOL has taken the company about as far as his skillset will allow and that a change in style could be needed. Be interesting to see what the rest of the year holds.