Hi,
As per the power point you attached all traffic that passes through the WAE will be intercepted and flagged for optimization as per the policy engine.
As you have mentioned the best way to prevent traffic from going through the policy engine (e.g. bypassed) is to use the interception ACL feature.
Regards,
Mike Korenbaum
Cisco WAAS PDI Help Desk
http://www.cisco.com/go/pdihelpdesk