M5300 Static Routing

Happy Wednesday.  Looking for a bit of guidance

Looking to be able to split some traffic and send in different directions.  Setting the static route on the switch works exactly how it is suppose to if the switch is off the network.  Moment I put the switch back on the network that route no longer works.

M5300 VLAN IPs 120,777,899

120= 10.120.103.250/22

777= 10.200.77.121/24

899= 10.200.99.120/24 VLAN (back to the rest of the network)

Static Route   10.58.12.96/27 next hop 10.200.77.120

Port 1   PVID 777 (Members1,777,120) out to VPN device 10.200.77.120

Port 2   PVID 120 (Members 1,120,777) My PC 

Port 49 PVID 1 (1-4093) Trunk Port back to Core Switch

So hook up VPN device to Port 1 and my laptop to Port 2.  Give myself a static IP 10.120.100.50/22.with 10.120.103.250 as my gateway Cool works fine, I can access the VPN Device with 0 trouble

Hook up my trunk port and connect back to the rest of the network, and that static path no longer works, even with my PC still having the M5300 10.120.103.250 as my gateway.

I am at a lost here.  Need to be able to send traffic out to that VPN Device while being on the network.  Believe it has to do with STP as I see that change in the log when I hook up the Trunk Port.

Thoughts, Comments, Concerns are welcome.   More info can be provided if needed.