It's not that hard: roo's behaviour, with his background taken into account, makes no sense from a scum perspective and some from a town perspective.
Let's start with the easy part: roo has experience elsewhere.
off topic: Lynching is good especially in a game this size 7-2. No lynching d1 would mean we lose a mislynch. We would lose upon the second mislynch so technically we would only have a single ml. Most importantly tho lynching kills scum. A wagon to analyze is good d2 if there is no wagon it is like we are starting at the beginning all over. Not mention that whatever actions we have we would do them blindly. And you are handing over a townie to the mafia for free. Town controls lynches as their are more townie so generally speaking lynches are a good thing. NLing is the correct option for certain situations, but not this one.
Absolute newbies don't write like this. There's plenty of jargon, the analysis is solid, and the first sentence indicates experience with games of other sizes. He's from another site. One, based on his posts, quite different from ours: dislike of random questions (like in our RVS), heavy emphasis on wagon analysis, a playstyle far more interested in votes than questions, and, most likely, a more 'pure' RVS start. (MafiaScum, perhaps? I know they like random bandwagons to start some games.)
And with that in mind, everything starts to make sense. roo's stuff about the end of RVS and all, along with his hatred of RVS, shows his motive for much of his behaviour: get the players out of RVS as soon as possible and into something productive. His method, the hector13 push/reaction test (a game-starting method I'm aware is used outside B12 at times) (and it's pretty recognizable as a reaction test. I mean, just look at it.) failed due to culture clash: Bay 12 values solid, detailed reasoning too much for such a test to work.
He summarized the whole mess well:
I did vote Hector because I was leaning scum on him and insisted he be voted mostly to get reactions as I have stated before. If someone did vote Hector I would certainly raise an eyebrow. It has already been pointed out several time that there was no case. And the vote was mostly a gut vote. I had nothing to go on and the rqs was doing nothing for me. So I used my gut read to get us out of rqs. I saw an opportunity to clear myself and took it no sense im being coy about it. why would I as scum do any of this? better yet why would a scum do any of the things I did?
And that's the key issue: why would scum not only go out of their way to push the game out of RVS, but do so in a way that attracts a ton of votes? Why would they keep going so strongly against the local style when under heavy fire for doing so? Remember, that one burst of activity got roo 4 votes, and that didn't persuade him to stop.
Actively behaving in a way that attracts a ton of votes while trying to get the game moving on D1 in this setup: not scum behaviour at all, but it makes sense as bad town behaviour with his personality (arrogant) and background (very non-B12).
As a side note, looking back through his posts, he's mostly comprehensible. Very different playstyle, but with that taken into account, he can be mostly understood. If the ICs had been more active and realized what was going on, and had roo been more willing to try the local playstyle, things probably would have gone much, much better.