Otterbein beats Capital amd moves up 1 spot gaining but 40 votes in a week in which three or four top ten teams lose. This week the beat Marietta (2 wins) and move up 6 spots, gain 144 points, and leapfrog # 13 and 14.
I don't know if the movement in a particular poll is necessarily reflective of only that team's result that week. As silly as that might sound on the surface, it might take a few weeks for the move a team deserves to make to reflect in the poll, based on who else loses. Also, previous wins that looked very good might not look as good and for those voters who re-evaluate the whole thing, that could be a factor.
Sometimes it's a matter of who around them loses and/or spots opening up. You reference a bunch of top ten teams losing last week, but that doesn't necessarily help a team in the teens, because those teams that fall from the top 10 might not drop far enough to fall behind a team in the low teens. But if you're in the teens and a lot of teams around you in the teens lose, that could open up more spots ... and you'd move up by default, not necessarily saying your win over a bad team suddenly makes you five spots better.
With respect to Otterbein, me personally, they were a big mover because I had them 18 last week and my 11, 13, 15 and 17 lost. So while I had Case at 14 and they moved up to 12 with two spots in front of them opening up, I had Otterbein at 18 and they moved up to 13 with four teams in front of them losing.
So they gained more spots as a reflection of me revising my feelings on the teams htat lost and slotting more teams behind them rather than as a reflection of their win over Marietta.
That might not explain the leapfrogging, but it could help explain the massive point gain.