First off - I thought this was solved, as you can read here: http://www.experts-exchange.com/Software/System_Utilities/Remote_Access/VPN/Q_28310395.html
Unfortunately, it was not because of an unknown error (it broke out site-to-site vpn).
Here is our setup:
Internal Network 192.168.1.x <--> (Inside: 192.168.1.1) Cisco ASA (Outside: 10.1.10.200) <--> Comcast SMB with external 70.91.xxx.xxx with 5 IP addresses.
We have a site-to-site which is working fine to building 'B'.
What we want to accomplish is setting up an AnyConnect VPN, which we had working when we did what is in the link above, but it broke out site-to-site VPN.
I thought I could just use a public IP address like 70.91.xxx.19 and use that as the VPN public IP, but it has to be the 'outside' on the Cisco ASA, so what I did was route traffic to 10.1.10.200 (the Cisco ASA from the Cable Modem side), but what that does it when it's going out, routes all the traffic as 70.91.xxx.19, so basically the site-to-site VPN said 'hey, this traffic is supposed to be coming from 70.91.xxx.22 and it broke it.