Most killers use a .22… Silent deadly not a 12gage shotgun… 
Joke’s aside for me FRV is most of the time enough i don’t need to digg deep in rawfiles often.
In this case i did few things
1 use selective tone and advanged contrast to “recover” highlight by pulling 70 isch neg.
Then push shadow max up put the rawfile through the wringer and adjust with -2,48ecv to get sort of a image.
If it breaks it wil be then i think.
Then export as jpeg. Lineair DNG (all corrections) and rawDNG (optical module only.)
DxO didn’t show any purple but as my 4 image faststoneviewer showed the rawdng’s did.
Run the rawfile against the dxopl rawDNG showed a change in clipped channel percentage so the “pixelvalue” channel would be too.
(i didn’t look or care about sharpnes or any image quality i was looking for channel changing in balance. Which influences WB.)
The small test showed a demosiacing problem in channel balance.
Panasonic rw2 and s deephadows did also a redisch colorcast in night shots.
They recalibrated some things and it’s better.
(look for G9 and redglow on the forum)
Edit this thread
So @Merlinx63 assumption that DxO causes the purpleglow was correct.
The exact why ? Don’t know and frankly don’t have the toolbox and knowledge to pinpoint that. We have developers for that by DxO.
(edit: Because the reading of there own dng’s show no purple inside DxO PL o think they know how to solve it.)
@Merlinx63 you could ask a staff member to look at it upload your test files and create a ticket.