Disconnecting : Blank Screen

[rebaser]

I have the DisplayLink successfully working but ....

When i disconnect I generally get a blank screen or my laptop reboots. If I get a blank screen; then the only way to continue is to reboot the laptop (by holding down the power button)
On the laptops my touch bar it still believes I have my two monitors connected, but will not display anything on the laptop screen. Aso reconnecting the USB-C cable the monitors that were working do not detect the laptop any more.

Details
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macOS Monterey 12.2
MacBook Pro (16-inch, 2019)

Any ideas on how to investigate or resolve this problem, I can not see anything in the troubleshoot guide

Thanks