My suggestion is that the depositary institution follow the instructions in the order; i.e. if the order says "hold" the funds, then that's what you do. As you indicate, some banks debit the account and either l) move the funds to an omnibus GL account or 2) issue a cashiers check.
Their stated rationale is that the hold might be overriden by an "empowered but ignorant" staff member. That's not an adequate reason as far as I'm concerned.
The bank is holding a court order with written instructions. It is supposed to be neutral and nothing it does should affect the rights of either party. Removing the funds from the account affects the rights of the debtor...
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In this world you must be oh so smart or oh so pleasant. Well, for years I was smart. I recommend pleasant.