Tutorial on how to enable and disable the touch screen on windows surface as follows.

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Touch Tray Toggle 64 Bit http://www.mediafire.com/download/wwjyvcpth07l5yc/Tray_Touch_Toggle_(64_bit).zip

Touch Tray Toggle 32 Bit http://www.mediafire.com/download/o72c4w9hh4hbdwd/Tray_Touch_Toggle_(32_bit).zip

When you launch the program it will guide you to identifying the touchscreen component, you input this information, and it will create a shortcut that sits in your system tray and allow you to toggle the touch screen on & off.

You can also set it WINDOWS to disable the touch screen when the pen is near in the OS. Under pen settings.

Source/Credit: https://www.reddit.com/r/Surface/comments/anem8l/quick_way_of_enablingdisabling_touch_screen/