This is unfortunate. The plugin sends updates to other clients regularly as part of the peer to peer model of how TARS operates. Apparently these updates, given their frequency, are being considered spam by the server. I can try reducing their frequency, but it will provide less fidelity when you move around.
As far as a "TARS standalone" thing, that would necessitate creating an entirely new application that "pretends" to be a DCS client. I don't think you're going to be seeing that anytime in the near future, given that my schedule is extremely limited these days and terrain is still the priority.