After reading all the articles and accounts I could find and looking at the streetview, it seems pretty clear the cyclist was proceeding straight through the intersection in the lane designated for that purpose and the truck was in the right turn lane to get on the freeway and either decided at the last minute he didn't want to get on the freeway or mad a overly wide turn to get on the freeway, and in either situation did not look in his mirror before making the maneuver.
Either way I don't see how it could be anyone's fault but the driver.
For authorities to state in the article "...it's not clear whether Ward pedaled into the big-rig or the truck drove into her." is so completely ridiculous. I've been riding for over twenty years and I've never once seen or heard of another cyclist "pedaling into" a moving truck, or car for that matter. Even in cases where it could be argued that the cyclist "struck" the motor vehicle it was because the motor vehicle pulled in front of the cyclist in some way.