Granted, the sample size is tiny (and the R-squared could be higher), but I do think the negative relationship is meaningful. To me, it's direct evidence that OTM fly's, etc. actually become less susceptible to overnight risk as fear grows in the market, which is counter-intuitive. In the above graphic, the last two highlighted rows on the left illustrate the concept pretty well. Same percentage drop, same absolute drop, different VIX level - which means the -4.20% move had much more destructive potential in '02 than it did in '08.
This is a good chart. It does show an important point - it's not the absolute movement that matters but rather how much were you paid when you entered the position vs actual market movement that's important.