Irrespective of what the bonus would have been WW did not take it - because it would have shortened his overall contract time at BA, due to the adverse publicity and reaction of shareholders/media.
Remember that he is playing a long and clever game and doing very well at it. He is only 47 years old and will need to earn a bit more yet before retiring in the style he would like.
Whether he leaves BA in one year or five, he will go with a laurel wreath on his head and gold stuffed in his pockets for having 'saved' BA. His contribution to the mess will be ignored. This will happen for all the usual reasons, not least that the main board have to save their faces - and backsides - by pretending that they hired the right man and gave him the right instructions. In all of this, the Board and their principle shareholders (across the last 15 years or so) appear to have got away with it.
Lastly, don't forget that MANY other corporations (across the whole spectrum of enterprise) are in EXACTLY the same situation. Which is to say that they are managing to keep things ticking over but have so badly reduced staff and got rid of the right people that - if a big project or disaster comes along - they will fail. The penny pinching of the past 20 years is now starting to come home to roost.