Pulling out rear sensor

One of my parking sensors has been pushed in somehow, but don't want to have to remove the bumper, anyone managed to pull it back out without removing anything?

You will probably need to remove the bumper to mount the bracket to inside of the bumper again mate. Other wise it will be back in again in no time unfortunately
 
I appreciate that this was some time ago but I've just read this today with the same problem. I went outside scouting out bumper removal points and managed to ram a (reasonably meaty) arm inside from underneath, grab the sensor unit and push back into place with a big grin 'click'. Literally a 3 minute job and on an inner sensor too. Looks good as new. So anyone searching for answer to same problem-it is doable