I suspect that any oil loss for the purposes of certification, if this is the case, (I suspect not) is expected to occur from leaking seals over a period of time, not a instant total loss through a faulty oil filter attachment, causing all oil to be pumped overboard very quickly.
You would probably suspect wrong then. Here is an extract from AC 29-2C which is the advisory material for FAR29. In the para on how to test for compliance with para 927 (the one on continued running following oil loss) it says:
A bench test (transmission test rig) is commonly used to demonstrate compliance with this rule. Since this is a test of the capability of the residual oil in the transmission to provide limited lubrication, a critical entry condition for the test should be established. The transmission lubricating oil should be drained while the transmission is operating at maximum normal speed and nominal cruise torque (reacted as appropriate at the main mast and tail rotor output quills).
I suppose you might be able to find a smoke-and-mirrors alternative interpretation for the word "drained" but to most people, it would mean undoing the drain plug.
One cannot be surprised that Sikorsky continue to bluster that there is nothing wrong with the aircraft - after all, the only alternative would be to admit that it didn't comply with 927, which would ground all the aircraft indefinitely until a hardware fix was installed. There might be a few operators wanting their money back...
HC