I have never believed " brock" was his name, more like it's some thugs name who wants to cave shady's head in so he has used their identity online, out of childish spite
his insistence to "call the cops" on himself is a tad give away,
and he stayed for the ride about "brother jeremy" as it does not bother him, in the slightest, because it's not really his real family, nor name.