Can I route multiple network/subnets over one TMG PtP VPN

I have a IPsec VPN between my local Corp network and my DR site with TMG. I have some traffic on a different subnet that I would like to route through my PtP VPN (my Exchange DAG traffic, etc.) to my DR site.

Here is what I have now:

172.16.0.0 (Corp) > 10.10.10.0 (DR)

I would like to add this route for this network over the same PtP VPN as well:

192.168.1.0 (on Corp side) > 192.168.2.0 (on DR side)

Can TMG handle this? How would I set that up?

Or should  I just an I vlan it? Or, and I'm not sure that TMG supports this, could I just create another tunnel from within TMG to/from same destination?

Not sure what is recommended or even what TMG supports.