Overriding preprogrammed code on LED Pixel module

I bought LED modules with ws2811 controller, according to the seller see here http://www.aliexpress.com/snapshot/6311605713.html. I can use Adafruit NeoPixel library to control the colour of each three set of leds, but as soon as my code stops interfering with the controllers, a demo programme starts blinking the lights, and turning them on, even though my code specifically indicates that the lights should be turned off. Has anyone experienced this and found a way to override the demo code installed in the LED strip?

You should not have that T-1000s controller connected to the LED strips.

Well... I dont. It is just connected to an Arduino

SteiniBrodda:
Well... I dont. It is just connected to an Arduino

Shouldn't you post your Arduino sketch and your circuit?