[Oh, Sebastian doesn't judge. Those are his thoughts on the matter exactly-- well. He does not feel tossed. When it comes down to it, it's up to Ciel if Sebastian should try to join or not, and no Defense Force duty will ever keep Sebastian from Ciel's side in the face of emergency.]
And joining the ranks would mean the orders of miss Pryde supersede those of your master? Mm, I see how that would be undesirable. May I assume you have discussed these conditions with the Force?
[And been told he either joins and obeys Kitty, or he's on his own?]