Clear XrmServiceContext Cache in CRM 2013

Hi.

Simple question which seems to be a difficult question to answer.
How do I completely clear my service context cache in CRM 2013 SDK.

My reason for wanting to do this is described in the link below, but basically I need to clear the cache to get my CallerID setting to start working and for CRM to start returning the proper results.

http://stackoverflow.com/questions/20682252/get-organizationserviceproxy-from-crmorganizationservicecontext-in-external-mvc

Thank you for your time.