His excuses were being high on meth and wanting to spend one last day with his wife and child, which means he's either the world's worst father or its greatest multitasker.
"DAAAAAAAD, I don't WANNA play 'stare to keep the invisible spiders away' anymore."
When someone calls in school bomb threats as decoys from his real objective, he's meant to lead an army of Europeans to rob the Federal Reserve Bank of New York while distracting John McClane. He's not meant to be crashing at his mother-in-law's house. Yes, he called in mass-child-murder-level terrorist threats from his mother-in-law's house. No, we don't think that's even in the top 10 reasons why she probably hates him.
"Actually, this is the only way he's screwed my daughter, which means he hangs around less!"