No, I doubt it. He doesn't have that kind of resolve, from what I've seen. He'd be cowed for sure.
Janus Hassildor, on the other hand, would singlehandedly kill every member of the Cheydinhal sanctuary if they tried anything like that with him. He'd probably seek out and destroy the Black Hand too, for good measure.
Janus Hassildor is, not to mention, the only count that seems to have any balls. All the other counts are either racist, weak-kneed, or average. If his vampirism wasn't an issue, he could probably have pursued a higher field of office.
Another bad feeling I get is if the count's son inherits his seat...Cheydenhal is screwed and probably would either be replaced by disgruntled citizens, or almost become a 2nd Bravil. Seriously, his kid is nothing more than a spoiled [censored] head, whom I should have tossed into the lava pits of Oblivion, and let the daedra play around with his smoldering corpse (if there is any)