Take a look at the attached one-minute chart of the VIX from that day (each bar represents one minute). There's no conspiracy theory too wild for me to believe, but in this case I think the chart clearly shows an opening data glitch. Nobody watching could possibly have taken it seriously as it represented a 10-point overnight jump in the VIX, while the S&P 500 was actually opening higher.
On IB a week before I had placed a large buy order (large for me, at least) for the XLF conditional upon the VIX hitting over 32 (32.50, I think). The order went off on that "bad tick"--long 17.79.
No kidding! Wow - and you made money off a snafu like that - amazing. How often does THAT happen? Still that's a little scary, and a cautionary tale indeed...
TOS does this from time to time, and it can be quite annoying, especially when looking at historical price charts, and the price action is a flat line over 10 years because XYZ had a print at 3500.25 last november. One of the only gripes I have with TOS, though, so I guess I'll live.
Any trade made with a contingency on that VIX print would have been taken down. The CBOE sent out a notice about the bad print. Just remeber its ET here and people tell yaa they make millions in casinos too.