Yeah, could have. But I've never traded a pit spoo and really didn't want to make this my first one. Also, I am trading 6 separate systems mechanically - one contract per system. I actually just swapped the SPY in for the ES, took the normal signals, and ended up being fully hedged by the end of the day.
My mechanical system gave me a buy a while before the problem, i am long at 902. The market is open at 916.50 what should i do as i have never expirienced anything like this.