Alex's response, as in Skinnerian conditioned stimulous-response, to Ludwig Van, as to the old ultra-violence, was without thought, even against his thought. He knew this was happening to him during the conditioning, and begged them not to do it to Ludwig Van. But, of course, they continued.
This is the approach to the nature of evil in A Clockwork Orange. Good is meaningless if it is done thoughtlessly.
This reflects upon the purpose of evil, and more, upon the nature of free will that permits the existence of evil, and sin. Man, and woman, are presented the option of evil, of the consciousness of evil, in order to become.
Alex throws himself out of the window, not to his death, but to his redemption, if not, in a way, to his transfiguration. At the very least, it is his triumph over the thought-control of his society.
This is certainly how he escaped being a clockwork orange.
See Wickernipple's fascinating Julian of Norwich on this point. See also the Fall of Man. For a curious counterpoint to Alex see Frankfurt example.