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Espruino is a JavaScript interpreter for low-power Microcontrollers. This site is both a support community for Espruino and a place to share what you are working on.
@allObjects
3.3V Power and GND: Nope, since it is all hard wired. D1 nd D2 you can put into high impedance (input, without watch on the pin) - if high impedance matches your definition of 'switched off'.
If you want power control, you need to 'sneak in' some small resistor+BJT or FET driven by another pin to drive external power if required current is beyond what the module specifies it can sink or source. If you though want to drive something of the button cell, you do not get very far.
To be of more help, you may reveal a bit more about what you want to do... ;-)