Moral relativism isn't a great argument to make - it's like saying it's ok to nuke Nagasaki and Hiroshima because Japanese did horrific things at Nanking. If the case was laughably weak, it would have been laughed off.

The problem is that if the super rich and powerful are allowed to blatantly show their middle finger to the law and profit, it creates distrust in government which historically resolves through revolution or nowadays in more peaceful countries resolves through election of unsavoury leaders to positions of power.

Doing a runner will probably irrevocably lose him a lot of popular support from people willing to give him the benefit of doubt no matter what PR dog and pony show he puts up. So looks like he's going to be in Lebanon for the next decade.