Your lawyer is a fool if he told you that. An accident is getting hit by a meteor. You should have yielded and made sure it was clear for you to left turn before proceeding. It doesn't matter if you were at the limit line or rolled into the intersection to wait, you must yield to on-coming traffic...
The only way here to be found not at fault, is to have witnesses state that the on-coming vehicle blew the red light. But the fact is, you have to watch, because the red light means nothing in real life, and if ya left turn in front of an on coming vehicle, you could be dead in an instant.
Intersections are death traps. The grave yards are full of those that lost their lives in intersections.
And just because it's an accident doesn't mean you aren't at fault. You are. Obviously I wouldn't have put myself in front of a speeding car intentionally. And my driving was not impaired. 3 out of 4 lanes had come to a stop, I was hanging out there, and I simply didn't see the car coming in the fast lane. I saw a blur of white and that was that.
I was following the normal way people made a left there. I learned the hard way that it was incorrect procedure, and never made the same mistake again. I was at fault. And it was a mistake, or bad procedure, if you will.
One more thought—Not to try to absolve myself. But when they teach you driving, they should spend more time on left turns than they do for parallel parking. Left turns are dangerous.