Stopping VM results in hung system

I have a LAMP server VM from turnkeylinux that causes issues whenever I choose 'Stop' from the drop-down menu under the VM tab in the UnRaid GUI. I'm running UnRaid 6.3.5. I've passed through a dual-port NIC that gets its IP from my PFSense firewall in the DMZ. I've configured it to use virbr0 as well. Everything works fine upon boot and my NIC gets the proper IP assigned (eth1) and the virbr0 (eth0) is assigned 192.168.122.192. When I click 'Stop' I see this in syslog:

Sep  5 11:43:25 DarkKnight dnsmasq-dhcp[6345]: DHCPRELEASE(virbr0) 192.168.122.192 52:54:00:6c:b8:ed
Sep  5 11:43:27 DarkKnight kernel: virbr0: port 2(vnet0) entered disabled state
Sep  5 11:43:27 DarkKnight kernel: device vnet0 left promiscuous mode
Sep  5 11:43:27 DarkKnight kernel: virbr0: port 2(vnet0) entered disabled state
Sep  5 11:43:28 DarkKnight kernel: vgaarb: device changed decodes: PCI:0000:0a:0b.0,olddecodes=io+mem,decodes=io+mem:owns=io+mem
Sep  5 11:43:28 DarkKnight kernel: [drm] AST 2100 detected
Sep  5 11:43:28 DarkKnight kernel: [drm] Using Sil164 TMDS transmitter
Sep  5 11:43:29 DarkKnight ntpd[2057]: Deleting interface #4 virbr0, 192.168.122.1#123, interface stats: received=0, sent=0, dropped=0, active_time=81227 secs

It seems to hang at that last line. GUI completely unresponsive. However, I can SSH in just fine and navigate around. When I look at 'top' I notice libvirtd is 100% and tied to PPID '1'. If I try to kill the process, nothing happens. One time, I tried 'kill -9' which resulted in a zombie process. Ultimately, I have to reboot the server.

I just had this happen and my system is offline (I'm at work). I've initiated a reboot from the shell but I don't have the best of luck with that and usually have to go to my console at the rack to shut things down. If I need to provide any additional info/details, let me know and I'll grab it later once I can get it back up.

This is the third occurrence and it's quite annoying. I'm suspect of the virbr0 interface, which I don't even need. Can I just delete that from my XML? There wasn't a <none> option in the template, but I just thought about editing the XML as I'm typing this

Any ideas are welcome. Also curious if anyone else has seen this. Maybe something with the turnkeylinux image - I've never used them before.

Thanks in advance.