Fix Migration option for a VM is greyed out

This morning I had to do an ESXi software upgrade within 1h service window. The ESXi Host was configured in a Cluster (3 Hosts) with vMotion active, but no DRS. I was able to move all the VMs running on the host to other hosts, except one. This VM was having an USB Dongle connected to it and stuck to the ESXi Host. The plan was to shut it down