Sum Zero,
The relatively high vols are due to the uncertainty of the earnings report coming up. Even if news is bad and stock drops, the immediate uncertainty is reduced somewhat. Also, with todays information availability, the news will never be major shocking, just maybe not as good as expected. So it is with almost 100% certainty that once earnings are reported, the vols will come down by some factor. It is the nature of how IV works on stocks around an event. So the odds of GOOG dropping to 1150 and vols surging are extremely low. Also even if stock drops and vols increase the deltas of the FLY will still produce a profit. Your chart is only isolating vols, at current pricing today, if you can open an option pricing model and enter correct today vol and price and then keep vol the same and chage price to 1150 and price the same FLY you will see what I am saying.
So ToS risk profile is one greek at a time. FLYS are sensitive to vega and delta/gamma at same time, more so based on the strikes Dest chose.