It is possible to have a legal Hoopa with Hyperspace Fury as when you move an unbound Hoopa to the box, it changes back to its normal form. Hoopa unbound can learn Hyperspace Fury throught the Move reminder.
However in the PKHeX it is marked as invalid move:
[ATTACH=CONFIG]13597[/ATTACH]
Also the PKHeX sais Invalid: Not a valid wonder card gift:
[ATTACH=CONFIG]13598[/ATTACH]
However if you have Hyperspace Hole instead of Hypespace Fury with the same hoopa, both problems disappear:
[ATTACH=CONFIG]13596[/ATTACH]
