Young and Restless: Did Jack Abuse Phyllis?

Jacks anger bubbles over fuels by BOOZE!!

On today's episode Phyllis was trying to get Jack to listen to her.  He was drinking (was that water or vodka or gin) and throwing her out.  He was walking upstairs to pack her bags to throw her and her belongings out.  She grabbed his arm and he pushed back on his own arm thereby pushing her down the steps.  

Was this an accident or something more?  

Is this physical abuse?  Is this Domestic Violence?  Do you think this is something that happens in households across America everyday? 

Was this just an accident?