Yes. He is now directly and mockingly violating the constitution and an explicit Supreme Court order. It is now a completely naked constitutional crisis for all the public to see.
Reasonable people have seen it happening since long before today, but today marks a shift from a more covert assault to an open one, and that is noteworthy.
Eta: I don't mean they were really covert before, either, to be clear. They dropped any remaining veil of plausible deniability today though. And then also let it slip on recording that the intent is to deprive US citizens of due process and ship "terrorists" (read: undesirables) to El Salvador, too. Today is a historic day, sadly.
Paraphrasing: The homegrowns are next. We gotta get rid of the homegrown criminals. You gotta build about 5 more places.
Trump to Bukele