Stopping Dynamic bone's motion

[striker2311]

Hii guys,
I am doing a head turn of a character though I have applied bone dynamics in hair bones, so basically when I'm flipping the bones at one frame the bone dynamics making it going whooshh (don't know how to say but yeah messing it up )

How the hairs are after flipping:
https://drive.google.com/file/d/1cndcRQ ... share_link

How the hair should be:
https://drive.google.com/file/d/1OpVM9I ... share_link

Here's the link video about how it is going:
https://drive.google.com/file/d/1qH7zNP ... share_link

Do anyone know how to stop the dynamics of those bones for those particular frames?
Thanks for your time watching the video and solving my problem in advance.

[synthsin75]

You can animate turning dynamic bones on and off.

[striker2311]

You can animate turning dynamic bones on and off.

Thanks for saving me again, Wes. Noob's question was it. (embarrased)