Yes, this case looks pretty clear.
Even if a withdrawal gets 'lost' (especially such a small one), the broker should initiate a new wire transfer, using his own money, and then follow up the 'misplaced' first attempt.
It's not a trader's fault if his broker doesn't know how to fill a transfer form correctly (if it really is an accident).
If it's on purpose, it's even worse, of course.
In any case: guilty as charged.
Cheers,
P.