i don't know the source, but even if this is a photo from a fan with an iphone there's not way the refs don't see this and there is no way 1 of the 5000000 cameras the NFL uses for games does not.
So what do you want Diggs and Allen to do here? If Diggs is being held he can’t do his job? How would you do your job if something was holding you down from getting it done?