It's within the court's purview to invent new tests which lower courts can use to decide cases. That's the entire point of a landmark case.
If the people don't like a landmark case (i.e. the disagree with the interpretation), Congress can pass a new law. If a new law contradicts the court's opinion, the law takes precedence.
Maybe.[1]
[1] https://en.wikipedia.org/wiki/Unitary_executive_theory#Judic...
But even then, with enough agreement from the states, Congress can amend the Constitution.
Congress can also impeach justices, which is one of their checks on the Judicial branch. They also have the authority to confirm the Executive's judicial nominees (one of their checks on the Executive).
So, they can invent tests later, after they see how this decision affects the prosecution.
how is that not a test?