Template:M comp disc Equity Derivatives 6.3(a)
Market Disruption Events fall in the Valuation chapter of the 2002 ISDA Equity Derivatives Definitions, not the Extraodinary Events. So that should tell you these are disruptions that get in the Calculation Agent’s hair and make valuing the trade harder — annoying, sure, but not so gnarly that the Hedging Party can’t comfortably hedge its exposure, so there’s no need to reprice the Transaction, or call on time on it altogether. To be sure, that time might come — especially if the Market Disruption is prolonged — but as long as you are in the Valuation chapter, the presumption is that it hasn’t come just yet.
If it does, make directly for the Extraordinary Events section (Section 12), and especially the Triple Cocktail.