"chainsaw" is a view mode in the editors' window. The different values represent different details about the URLs in the current category (or in its 'unreviewed' pool).
I personally use "chainsaw=1" almost all the time, regardless of what I'm doing. Other editors prefer different modes at different times or for different kinds of editing activity.
But in any case, even assuming that editor doesn't always use the same mode because he's used to it, the only deductions that COULD be drawn are about what kind of activity the editor had EXPECTED to be doing. But that's not always the same as what he ended up ACTUALLY doing.
So there's no need to ever worry about "chainsaw".
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As for the sequence of events itself--I wouldn't see that as any more worrying than any other sequence of events. There's no standard "chain of relaed events" that would match what you saw, so either this is an UNUSUAL chain of events, or it's a sequence including UNRELATED events.
In the first case, you can't reason statistically about it, because you don't have enough similar cases to estimate probabilities.
And in the second case, you can't reason about the events as a sequence at all. They're independent events: they could have happened within seconds or separated by years.
Again, in either case, your best guide to what is going to be happening at the ODP with a site, is your knowledge of the site itself, and your understanding of the concept of unique content.
There's nothing WE can tell you about the site itself, of course.
As to 'unique content' -- at the core, this is conceptually simple. Just ask yourself: if you died in a tornado, if your website designer were assassinated by terrorists, your ISP's servers confiscated by the FBI, and your site's backup CDs lost at sea -- WHAT WOULD IT MATTER?
What information would be forever lost to humanity? What business transactions would cease to be possible? What aspects of your personality would survive only as the memories of your friends (and enemies)? THAT's the website's unique content.
If a surfer can answer that question, easily, by perusing the website -- then, well, some ODP editor will want to list the site (SOMEWHERE in the directory.)
