Rulings powered by The Netrep API. [Re: Acid Trap Hole] If the targeted monster has a Flip Effect, that Effect is activated whether the DEF is greater than 2000 or not. If the DEF of the selected monster is 2000 or less, such as a 'Hane-Hane', it can not select itself for its Flip Effect since it is destroyed.
Starter Deck Kaiba
FLIP: Select 1 monster on the field and return it to its owner's hand.