I really don’t think it’s worth worrying about doing that footage, not simply for a reconstruction of the theatrical version, better that we get another print and start fresh.
I can encode a theatrically accurate reconstruction with that footage upscalled from LD capture, it doesn’t look great but that footage is dark and low resolution and only a few seconds anyway so it doesn’t matter too much, it certainly doesn’t look as bad as the footage inserted into the Hellraiser III bluray or the footage inserted into Exorcist III director’s cut bluray. It’s really not worth getting just that footage from this print IMHO.