Comment from Lipstickalley. I sorta agree with it.
"Solange was not drunk or having a mental melt down, otherwise she would've been attacking everyone and not able to pull it together to walk out and get into the car right afterwards. He clearly has done something wrong and she is fed up. In the elevator you can see bey fussing at him also, but she is more like I will handle this ish at the house later, and handle her in the car. He either put his hands on Bey and solo knows, or solo knows about some infidelity and is standing up for her sister. (My sister taught me I should speak my mind!")
but solo was trying to fight like she f#cking him herself. lord only knows!!!!
bet Jay was being an ass and saying all kinds of slick **** to egg her on and make her keep coming for him. he seems like he would be a sarcastic jerk.
eta:
and damn it looks like they told him he couldn't get into the same car as the women when they left and he had to get in another. theres a longer version of the attack and before they exit it looks like Solo is saying "You aint riding with us! Bey, its him or me! But your ass aint riding with us!"
That girl aint crazy y'all!!!"