Look more closely. Many of the "liberty" sheriffs are, in fact, not. They are ex-mil-in*tel, ex-D**Ea, ex-"Ag*ncy. They play a role, very nicely, and those pro-liberty folks who aren't paying attention or who don't know them fall right in line.
So, the "planned arrests" are likely of the "liberty" sheriffs who are out side of the alphabet soup control program, i.e. not many of the sheriffs you think are liberty ones.
Don't ask me who. Research yourself. You'll be pretty suprised. Nothing is as it seems.