Sinclair gets into some real strong arguments in many episodes; he
is almost *constantly* at odds with Dr. Franklin in "Believers" (and just
about loses it at one point), he's arguing and exhausted nearly the entire
episode for "By Any Means" (and *does* lose it at one point, in a way
that says get-the-hell-out, and is also weirdly funny). Anyway, it's
definitely there.
jms