Speeds were better at night, though still plenty of timeouts to be had.
As of right now (10am PST), speeds aren't horrible. Timeouts/half-loaded pages still occurring, but the site is navigable, which is a great improvement over the rest of the weekend. Average time of page load the last 12 hours is between 3-5 seconds, whereas this weekend was 5-10 seconds.
Will keep an eye on it and report if anything changes.
EDIT: (3pm PST) FTP/cPanel are pretty much useless at this point. Timeouts ad nauseum. Site is still accessible, though very inconsistent. There is definitely a correlation between time of day and server speed, which probably has to do with increased activity.
I really can't say what's up. If all that has been done hasn't restored Stevie, my intuition says hardware related (which is a possibility since these changes occurred right after a power outage).
Color me stumped.
EDIT 2: I've made this little picture from the site monitor that was posted earlier. Basically you can see that Stevie looks to be much slower now than it was earlier this month immediately prior to the outage. When the graphs become green, site speeds return to normal, but you'll notice that green correlates with the times of low activity. The possibility exists that this is imply due to increased users on Stevie, though the timing suggest relation to the power outage.