The constitutional doctrine of balance of powers means that any two branches of government can choose to check excesses of the third.
That concept doesn't exist in Polish constitutional theory, as it's an American concept. The Constitutional Tribunal exists to protect the Constitution, not to act in any way as a branch of government. This is enshrined in law.
To quote a famous U.S. President, "[The Chief Justice] has made his decision; now let him enforce it!"
That simply doesn't apply here. For a start, the United States Constitution doesn't have anything about decisions being final, whereas the Polish Constitution does. It is simply not possible under the law of Poland to disobey the orders of the Constitutional Tribunal, for a start - hence why the Council of Europe are now getting involved.
Ultimately, it is a political question to be resolved by Polish voters, and not disgruntled expats in Poland who don't vote in national elections.
Nice personal attack, but as far as the law is concerned, the President is now in breach of the Constitution. Voters have nothing to do with it.
In fairness to PiS, they didn't start this row by attempting to pack the court.
They certainly did start it. All they had to do was to leave the case to the TK, who in accordance with the law, threw out two of the appointed judges and confirmed the appointment of the three by the previous Sejm. PiS would then have been free to appoint two judges as they were entitled, and we would've avoided a serious constitutional crisis.
Now, do try and avoid applying American concepts to Polish constitutional theory.
However, PO knew that the PISites wouldn't be able to contain themselves and thus would cause a fully fledged constitutional crisis and drive away almost all of their newly acquired supporters, which is exactly what had happened!
Indeed, the latest polls show that PiS are down to 32% already - so they've lost nearly 6% of the vote in just a month.