Do I think a trainer standing on the sidelines, that surely has a bunch of responsibilities, should always be aware of every single thing that's going on during an NFL game? In most situations, probably not. However, this isn't most situations because Colin Kaepernick isn't most quarterbacks. If you are employed by the San Francisco 49er's you have to know what you have gotten yourself into. I can't blame Kaepernick. He has know idea where his throws are going. I'm sure, if he had it his way, he would be able to refrain from throwing the ball 100 feet over his receiver's head. Alas, that's just not within his skill set right now.
You know when they say that those people that keep guns in their house are more likely to have a gun related incident? Turning your back while Kaepernick is in the pocket is like tossing a 9 millimeter in your toddler's crib and then turning your back to fold laundry. You can't be mad if you catch an errant bullet to the face. That's exactly what that throw was. A fucking bullet. If that guy's jaw isn't broken he should throw on a cape and start fighting crime because he's missing his calling as Superman. There are only a few things that Colin Kapernick is capable of. Throwing a football very very hard, throwing a football very very fast, and throwing a football wildly inaccurate. When you're the guy roaming the sidelines you better keep that scouting report in mind, or you might end up drinking through a straw.
P.S. He potentially stopped that ball from nailing Antoine Bethea, and we all missed out, because I would love to see that confrontation after the fact.