this was the final command for me
xinput -set-prop "DualPoint Stick" "Device Enabled" 0
source: https://cederlys.wordpress.com/2010/07/13/disabling-the-track-stick-in-ubuntu/
xinput --list
watch for ids on each line.
xinput --list-props 13
xinput --set-props 13 142 0
Ids are dynamically alocated but you can use device and property name, thus:
xinput -set-prop "DualPoint Stick" "Device Enabled" 0