I have to respectfully disagree with Waitneb. I believe 100% his/her story and it would be nice to not dismiss a WOM lawsuit till you get your plastic cards, but in my opinion, this is not possible. The WOM lawsuit couldn't ask the court to compel USCIS to approve your AOS petition and issue you a green card. All what you could ask is to ADJUDICATE your petition. And seems that they just did it. So you got the relief you were looking for; now you can't push it further.
However, you should: 1. get a copy of the internal fax from USCIS, showing that your case is approved. 2. Include in the joint stipulation to dismiss a clause that "this case can be reinstated in the Court if Plaintiff didn't receive the official notification about the adjudication of his/her I-485 petition in 30 days after the date of the order". 3. alternatively, you can try to negotiate with AUSA, as Waitneb suggested, to extend 30 days in common agreement.
And, congratulation for your success!
Paz is right that you can not ask the judge to order them to issue approval.
However, my point is that you do not have to consent to a joint stipulation
for dismissal. This is a leverage that puts pressure on CIS to send your card
fast (which they usually do anyway). The judge can, of course, order your
case dismissed at anytime upon AUSA's motion. But even then you can
always oppose the motion saying that you have not received "proof of
permanent residence" which means the plastic card.
Of course, this is all assuming that you only asked in you original complaint
for an order compelling adjudication. If you asked for anything else, say,
a declaratory relief that their delay was unlawful, or any other relief, then
your case is not quite moot yet and the judge would not automatically
dismiss. Also, you might be a prevailing party at this point because you had
the judge enter an order in your favor dismissing the MTD. You can recover
your costs (but no attorney fees if you filed Pro Se). The so-called
"Catalyst Theory" does not apply in your case.
Of course, this is all theoretical and you are likely to get the cards with no
problem soon and probably have the case dismissed in a joint stipulation.
Just make sure you take enough precautions to protect yourself in case of
any future problems.
Good luck,