Usa?
I doubt it will do anything since the bottlenecks are:
1. International link.
2. Telkom shaping - solution is to get a Verizon or SAIX unshaped account or pay for unshaping proxy locally.
It may help somewhat if you connect to the proxy on port 80, but i'm not sure if SAIX shape per protocol or port. If they shape per protocol, then no-go.