Everything here is from the references shown below, with a few comments in an alternate color.
Flap Asymmetry (caution)
DO NOT ATTEMPT FURTHER MOVEMENT OF FLAPS.
According to the engineer who wrote this, the threat is that the airloads on the flaps can push them in (retract) which could exacerbate roll tendencies.
Gulfstream GVII-G500 Airplane Flight Manual, Revision 4, August 29, 2019
Gulfstream GVII-G500 Production Aircraft Systems, Revision 3, July 15, 2019
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