I believe presumption of innocence is a tenet of our legal system, no? You, OTOH, presume Kane guilty - as you have so stated. Strange, since I remember you proclaiming OJ innocent after the Bronco chase.
You speak of a 'violent attack', while I ask, "What violent attack?" For all we know, the Kanes & the eyewitness speak the truth - they were locked in and wanted to get out - and the recidivist drunk cabbie with a history of trouble is the liar.
Likely, he wouldn't unlock the doors, and the Kanes made efforts to escape unlawful imprisonment.