There is nothing that the Pope can do to make the Orthodox accept him as the head of their denomination. There is nothing he can do to punish them, either.
I'd be curious to hear what type of power you think the Pope has to make Southern Baptists and the Orthodox change their ways.
My friend, you are ALREADY being punished. You allow divorce up to four times - that's not anything the early Christians allowed, it is an absolute break with millenia of Christian doctrine and practice and it is a terrible wound on the Orthodox and the Protestants.
You permit the use of contraception. All hormonal contraceptives are abortifacients. Thus, you're schismatic theology is killing your children and turning your wives into objects to be used, turns your men into heartless fools.
Everyone who ignores the words of the Pope injures themselves grievously. The Pope is merciful and tries to heal your wounds by teaching you the Truth, but you will not listen.