Similar story here. happened about a month ago.
Since i was the left turner, i took 100% of the fault.
I asked my ICBC claim adjustor the same question - "what if he rammed my car on purpose?"
My adjustor said "unless you can prove that he deliberately rammed into you, you will most likely take all the blame." I don't exactly know how anyone could prove that, but yeah....it sucks. 15 and a half k damage to my rear right side. 1000 deductable, and 30% surcharge on insurance now.
Edit: same case here, no skid marks, i didn't see him braking. anyways, good luck with your case. let us know how it goes later on.