A few observations:
The 07/30/2002 Spaceland show is referred to as an "one off show" in the Nov '02 GSL newsletter, which also states they "unveil[ed] a handful of new compositions that go to eleven on the ruffness scale. Keyboardist Ikey was in fine form, even guesting with GOGOGO AIRHEART as a warm-up. Ikey left THE MARS VOLTA but is still a member of DE FACTO - rumor is he will also be appearing on the upcoming MV album too, so who the fuck knows?"
The part about Ikey leaving TMV, yet still appearing on DITC, reminded me of this german Interview from the March/April 2003 euro tour with Jason Lader, where Omar is quoted saying "we don't have a full-time bass player and keyboard player at the moment, we hadn't had the time yet to search for full-time band members" ("Wir haben derzeit keinen festen Bassisten und Keyboarder, wir hatten noch keine Zeit, feste Mitglieder zu suchen."). Seems like Ikey wasn't considered a band member even after De-Loused was recorded. I wonder if he was ever considered a full member, given the TMV/TMV group distinction later on and that Marcel almost fully took over keyboard duties in the studio on later records. (regardless of what his "official" status ever was, he will always count as a full member to me)
The part about new De Facto compositions is consistent with the June '02 GSL newsletter stating that "De Facto have begun assembling tracks for their next (and as yet untitled) album, due for release on GSL sometime in the early spring" (this never happened)
My suspicion is that those were the De Facto sessions featuring John Frusciante mentioned by Sonny Kay in his recent email to me and this GSL bio from 2003, which says "Omar mentioned more than once that John would be playing on the "next" DE FACTO record". According to RHCP tour history John, who at the time had finished working on BTW and had not started recording SCWP yet, had almost a full month off after meeting Omar (April 24th - May 26th), and then another full month (Aug 8th - Sep 16th) right around the time when Jon Theodore was still touring with Golden (so TMV was on a break) and the De Facto show in Long Beach happened.
There was another De Facto show scheduled on Oct 23rd, 2002 at the Chain Reaction in Anaheim, but they cancelled due to "recording commitments" (DITC sessions had already started)
One last fun fact: Even though the story of Frusciante meeting Omar is well documented with multiple sources, the rumor about De Facto opening one of his solo shows a year earlier in 2001 is actually true. It was this show.