Load of rubbish. There are no foreign owned entertainment venues. It would be a Thai Company that owns it. I may have foreigners as shareholders to the value of 49% but thats it. Try looking at illegally owned places without licenses.
If he did slap her, well som nam na... and sure many drunks have aptitude, but licensed bars are suppose to have CCTV so where is the video of the incident.
Was there many witnesses? Other wise the story is just here say. They mentioned autopsy, but no mention of a crime scene investigation at the car to know he did it or not.