How can I quickly reinitialize Dragon NaturallySpeaking after the microphone got saturated?

From time to time the microphone in Dragon NaturallySpeaking gets saturated:

How can I quickly reinitialize Dragon NaturallySpeaking such a situation?

Clicking on the microphone button works but I have to wait for typically around 20 seconds. Is there any faster way to reinitialize Dragon NaturallySpeaking so that I can continue dictating?

I use Dragon NaturallySpeaking 12.5 professional on Windows 7 SP1 x64 Ultimate.

I know that I can reduce the occurrence of such events by changing the microphone volume.