They FINALLY got around to making the ruling match what the Japan ruling is.
From the UDE FAQ (courtousy of the e-mail just sent to us from the UDE guys)
[font=Arial, Helvetica, sans-serif] If it is destroyed by your opponent's "Harpie's Feather Duster", "Dust Tornado", etc. while it is an Equip Spell Card, "Dark Necrofear" will NOT return during the End Phase since it was NOT destroyed while a Monster Card.
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Now let's see what De-Fusion says...
From the UDE FAQ (courtousy of the e-mail just sent to us from the UDE guys)
[font=Arial, Helvetica, sans-serif] If it is destroyed by your opponent's "Harpie's Feather Duster", "Dust Tornado", etc. while it is an Equip Spell Card, "Dark Necrofear" will NOT return during the End Phase since it was NOT destroyed while a Monster Card.
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Now let's see what De-Fusion says...