Help with EVA construction

[RoninFrog]

How do I detach the decoupler my kerbal is standing on??  It's offset from the crew cabin above the kerbal.  I used it to attach the control probe sitting underneath but I re-rooted to the probe to fix symmetry before I launched (which is why it detached the wrong way), and now I think the craft thinks that the decoupler is the root part, and thus would have part attachments.  Is there any easy way to just get rid of the part?  Any cheats are fine.

Things that don't work:

1. There are no other part attachments preventing me from detaching; the decoupler went straight from the crew cabin to the radial attachment.
2. Lowering gravity doesn't allow the kerbal to pick it up.
3. I'm on a Mac with no mouse, so I don't have a middle mouse button for object thrower.
4. I'm not comfortable modifying any save file information as the craft states are pretty precarious (they are physics landed-suspended).

At this point I'm going to be working on creating some sort of acetylene welder type rig to burn the part off with overheating, but if anyone knows an easier way please let me know.

[Superfluous J]

(3 ideas. #2 seems easiest)

 My very first thought is the "KABOOM" mod though it seems to be outdated.

https://spacedock.info/mod/833

 

Second thought is to follow this old post. No clue if it'd work but hey what have you got to lose?

 

And my third thought is to EVA construct a 2nd docking port somewhere accessible to a ground vehicle, and then docking that ground vehicle to your current vehicle to hopefully re-root the ship and allow you to take that port off (because yes, you cannot remove the root part with EVA construction)

 

 

[jimmymcgoochie]

Copy the save file, then modify the copy to turn the decoupler into a separator and decouple it? There’s also the KML save editor that can modify the root part, but it’s a faff. In both cases use a copy of the save so the original is still recoverable.

[RoninFrog]

Thanks for the suggestions everyone, but I don't think it's going to matter in the end.  I loaded the crafts to try some things, but one of them was apparently saved in the flying state, and flying crafts and landed crafts don't really mix well.