Ok, I'll bite. First, motion for summary affirmance does not affect, at all, DC's right to move for an emergency stay pending appeal. DC can file it tomorrow and ask for it to be acted on before the emergency legislation lapses. And the Court would probably consider such a request. Why DC haven't done that is simply beyond me -- the more they delay in filing such a stay motion the more difficult it is for the court to act on it before the 90 days expire. That increases the need for permanent legislation, as we all know that DC would plunge into a massive bloodletting in the absence of a carry ban. But permanent legislation will effectively hand on a platter to Gura a strong mootness argument on their present appeal, which DC doesn't want. This is either really bad lawyering or a paralyzed DC government (I think the latter).
Remember? The federal prosecutor in DC had stopped bringing charges against people who were arrested for carrying without a permit because of the injunction against the original law even though Judge Scullin had granted a 90 day stay. The main reason DC enacted emergency legislation was to get the feds back to formally charging people for carrying without a permit. It certainly looks as though Scullin will declare them to be in contempt and issue a PI so DC will likely be forced to request that stay somewhere around Dec 4th. Until then they're very happy to have the federal prosecutor charging people under their temporary law for as long as it lasts.