Muting RF output in ADF4360-1

I need disable/enable RF output of ADF4360-1 quickly, i.e. in less than 1 microsecond.

There is no single pin like "TXON" or "Output Enable". I don't see a way to access "MUTE" block either, which is driven by "Lock Detect" only (?).

My question is:

May I disable RF output by disconnecting RFoutA and RFoutB pins from DC supply?

In that case, all the tail current of the output differential pair transistors would flow probably through their B-E junctions; is it safe?

Any other suggestions how to mute RF output quickly?

Thanks in advance