Forgive a european for the strange question but doesn't this ruling cause a massive problem constitutionally?

Let's assume trump wins the rest of the cases in SCOTUS and gets reelected. Why wouldn't texas still want to secede?

Is there any way for SCOTUS to say "Whoops we were wrong" after the fact, or otherwise change this precedent, or will trump have to impeach 7 of the 9 justices to keep things from falling apart afterwards?