Q: Is it possible to enable / disable scand demon at runtime?

A: Yes, it's possible.

In order to disable scand demon, the user must call the command:
echo 0 > /sys/module/nyluxkbd/parameters/scanwedge

In order to enable scand demon, the user must call the command:
echo 1 > /sys/module/nyluxkbd/parameters/scanwedge