People lie. It happens all the time. I see it all the time in my line of work. Most often, in my experience, the truth is somewhere between all the different stories different people tell.
Is the person who posted that picture lying? I don't know. What's the C/W's story? What's McCoy's story? There's a lot I don't know. But yes, people lie. Someone is obviously lying here (either McCoy or the photo poster).
Okay, well that woman had her face smashed in, unless you are one of the crazies on twitter who thinks she has access to Stan Winston makeup studios and they are in on the hoax.
And quite frankly, I have a hard time wrapping my head around a victim of this magnitude deciding that the actual perpetrator wasn't worth her time, but instead she could frame her ex. That's next level crazy IMO.
The only fair thing to say here is to wait for the facts to come out. You can't ignore a credible accusation (which is on law enforcement to determine) and you can't assume guilt either. We've got avery very limited info to work with.