I dunno... his political position may have some merits, but calling church leaders "bigots" doesn't seem like a very reasonable way to proceed for someone that is trying to not be excommunicated.
Colton, I'd be curious to know how you reconcile Prop 8-like activities with D&C 134:9.
That certainly seems to be the kind of basis of personal disagreement that you discussed previously.
I think it's answered by D&C 134:1, "We believe that governments were instituted of God for the benefit of man; and that he holds men accountable for their acts in relation to them, both in making laws and administering them, for the good and safety of society." In other words, we have a responsibility to pass good laws (v. 1), but we shouldn't penalize people for not belonging to the church (v. 9). Seems consistent to me. Nowhere does that imply that we shouldn't use our own morals (religiously-founded or otherwise) to decide on what good laws are.
Fundamentally I'm somewhat concerned about what I perceive as a radicalization of some church members on this issue and I think Packer's talk may be a symptom of this trend. Since they've been forced to defend the actions of the church on this point so publicly I wonder how much real room for dissent their is socially to say that the church did the wrong thing in this instance. In doing some quick research, several members or ex-members charge that they were disciplined or threatened by church leadership (usually at lower levels such as stake presidents) for being publicly against the church on this issue. As someone who's sort of in a constant flirtation with the idea of some level of casual church membership I'm wary of the kind of culture that seems on the verge of occasionally making this a de facto purity test.
I agree that it's good to be concerned about that. And I could see how some (local) church leaders might feel that an LDS member supporting gay marriage efforts had crossed the line to where they are no longer sustaining (global) church leadership. But from my perspective, such a litmus test hasn't been implemented yet.