Because he was going his own way? He chastised Nynaeve for going to the prison for gods sake!
And since when is "my friends did not come up with a better plan" an acceptable excuse for an atrocity?

The ripples of what Rand did were felt as far away as Bandar Eban. People in the know, from Nynaeve, to Cadsuane to Sorilea to Rand himself acknowledge that Balefire can greatly harm the Pattern, and large quantities can really destabilize it.
Now that I'm done, go ahead and prove what I asked you to.

Read the damn books. The Pattern has no control over the DO or the True Power. RJ made it abundantly clear the Pattern cannot factor in the DO into its plans. If the Pattern wanted Rand to escape Semrihage, it would have ensured that Aviendha or Nynaeve or Cadsuane were present so they could stop Semi.
And if the Pattern did not want Rand to destroy it, if it had any control over him, i wouldn't have let him come all the way to Dragonmount, to the very brink of destroying all. To quote you, a dead pigeon would have knocked the CK out of Rand's hand when he attacked Tam.


In all the cases where the Pattern is directly interfering, the people being interfered with feel a tugging sensation. Perrin and Mat felt the same thing Verin felt when they were being pulled in one way or another by the Pattern. Rand felt no such thing when he went to attack Graendal.