I don't want to doom but what can be done?
Well even in the absence of some kind of entertaining alternative emerging, there's a few things that can happen, in descending order of likelihood.
The first recourse (that the Trump admin is undoubtedly already pursuing) is the appeals process. District judges pulling this shit always forget their "power" is temporary. It instantly goes up to the appellate courts and very often gets overturned with minimal effort (because even if the higher-up judge agrees with the tard district judge, they usually have more sense and realize "okay no, this won't actually work"). Even failing that, it goes to the Supreme Court, which has already expressed major irritation at the lower courts doing this crap. SCOTUS already warned if this kind of thing keeps landing in their laps, they're going to rein in district courts' authority to do this at all.
The second recourse is the legislature. Part of the checks-and-balances feature of the US government's construction is that any two branches can override the third if it steps out of line. Congress can always pass a law explicitly permitting what the executive has been enjoined against doing by a pissant court. A court can still say "nuh-uh!" but that leads to the President being able to safely proceed to the third recourse without risking impeachment, and that is:
The Jackson gambit: "John Marshall has made his decision, now let him enforce it." Technically speaking the judiciary doesn't actually have any ability to
force the executive branch to do something or prevent it from doing it. Seriously. There's no judiciary "army," there are no judicial cops, and although courts routinely order sheriffs and deputies to execute warrants and do other assorted tasks, they're part of the executive branch and -- push come to shove -- they have no power to
force them to carry out the courts' orders.
This flirts with "constitutional crisis" territory like the press is salivating over, because the Constitutionally-established way for the courts to enforce their orders against an uncooperative executive branch is to lean on the legislature (impeachment, invoking emergency powers to remove the President, etc.). Unfortunately for the courts, in the situation we're in now, I don't see Congress mustering enough votes to actually do those things against Trump, especially if SCOTUS rules in Trump's favor in these stupid injunctions, and some dumbass district court tries again anyway and Trump just says "lol fuck you."
I sincerely doubt it'll actually reach "constitutional crisis" levels. The public mandate is too clear and strong right now, and expecting a Republican-held Congress to side with a liberal court over their Republican President is really optimistic. If Congress even
joked about pursuing that avenue, Trump could do a shit ton of damage on his way out even if they succeeded. It's not worth the risk.