I admire your dedication to principle, but it just isn't that big of a deal to me. Besides, I'm sure viewer numbers will play heavily into the MASN renegotiation process, so one might theorize that a massive fan boycott of MASN would actually hurt the Nats.
It isn't just a matter of principle (my home telly has never been tuned to MASN - I couldn't even tell you off the top of my head what channel it's on in my area; I have caught bits of it here and there in sports bars though)...but for any telly crew (however free of Angelos contamination they may be) to top Slowes and Jageler is rather a tall order, and I doubt that those lot on MASN would be up to it.
And as far as the MASN renegotations, in the long run those really won't matter...as long as Angelos owns the network, the Nats will never get a fair shake.
[In the interests of full disclosure I have a practical reason as well - my current telly is pretty much burnt out and not yielding much of a picture, and finding a replacement has been difficult - and all they seem to have at Best Buy, the only place within commuting distance of my residence (I don't drive), are those massive man-cave models that are too big for my flat and (more important) way too pricey for the amount of telly I watch.]