My perfect sister-in-law, with her perfect life, got drunk before dinner, and then just after dinner, she basically told the whole family she is cheating on her husband.
That is so awesome
Not for your brother(?) that is....but just the situation how it played out.
Nothing like a soap-operatic situation or revelation to brighten up one's holiday.

I normally don't take delight at other people's misfortunes, except for those who probably deserve them or those, as mentioned, who have seemingly perfect lives. They always seem to brag about all the good things in their wonderful lives (the valedictorian son, the husband who got promoted to VP, the daughter who got a $10,000 raise); incidentally, they never say anything about the coming-out-of-the-closet gay son, the adulterous husband, and the slutty daughter who got syphilis.