Use an old atty tp prise out the connector; use about a 2mm gap (not tightened all the way) and gently force the join sideways, one way the another. Once out, remove cap from other end, put in a small ball of cotton wool or tissue paper as cushioning and use a blunt ended rod of some king to push the innards out. The first thing out is the black plastic membrane containg air-pressure sensor, with two pins going into the connected mini circuit board (has the protecton circuitry and logic for charging, drag time, etc, plus mosfet).
Works ok with 901 / 808 baat.s which have a protruding connector.
Two alternatives :
I like to do touch switches with one contact being the cartomiser casing.
Another auto-like way is by mounting the connector on a light spring.