Keep reading, there are countless threads on this issue (as is the case with everything we discuss here). This has been discussed often and several variations on how to remove and unplug have been offered.

SOMEWHERE here, you will find my procedure, which I insist is the easiest way to do this:

1) Using a ratchet and extension, loosen the bolt and at the same time, gently pull on the connector/sensor.
2) When the bolt becomes free, hold the ratchet such that it keeps the bolt in the hole of the sensor and pull the ratchet/bolt/connector/sensor out as one unit.
3) Once you get it all free and out far enough you can see what you are doing, lay ratchet aside and grab the bolt (still in the hole of the sensor) and set it aside.

It is now easy to unplug the connector, and you don't drop the damn bolt this way.