Having worked in many Congressional campaigns and having family in the county and state Republican organization, I can tell you without reservation, "Bull."
The local organization selects the candidate and helps the candidate campaign by giving them access to resources. The national organization allows access to resources for voter lists and donors and will give specific help only when asked or if it's a tight race with a Democrat in an important district. That's when you can get the President or Vice-President to pay attention - a swing district up for grabs. That was how we got Pres. G.H.W. Bush to come to a rally and give support to knock out a weak Democrat incumbent, the candidate didn't matter - the result in the Congressional tally did.
Local internecine fights are not in the purview of the national organization, they could care less. They didn't get involved during our last nasty fight for the Governor nomination and they didn't do didley in the last Senate race I worked in. That's for the locals to decide.
Just because the local Republican organizers support Spector doesn't mean it fit's into your "RINO conspiracy."