@matigo No, I was totally reloading the timeline (I'm not storing anything locally, basically), and was getting posts with the youMuted stuff set to yes! It seems like it takes a while before it starts actually suppressing the posts. I'm not sure if it suppressed mutes at all, since I tested mute and silence on the same person.
So, hmm, can I get a list of folks I've muted/silenced to undo that? >.>