Rear bumper removal question

[T16]

Guys,

Ive a sensor not clicking on the rear bumper of one of the ZTs, its the one on the drivers corner (RHS).

Now my question is.... is it possible to just pull out one side of the rear bumper to access the back of the sensor, or is there not enough give/access and the whole thing needs to come off?

Reason I ask this instead of just going and doing it, is that the car is 20 mins away, and space is very tight around it, and it would just be me trying to manoeuvre a bumper on my own, so wanted to avoid any potential issues before its a wasted journey.