Just off the wall, but there are a couple of publications regarding lighting strikes on aircraft done by NASA and by the FAA.
Original Publication:
https://weatherguardaero.com/wp-cont...ation-1008.pdf
A subsequent release:
https://apps.dtic.mil/dtic/tr/fulltext/u2/a222716.pdf
Both of these studies refer to using wing(s) from F-89J for experiments. Search for F-89J in either documents.
So perhaps the fate of the planes was some FAA test facility to be used in experiments such as these.