from What i understand Oracle has now officially released a method
to disable AWR for people without the Diagnostic Pack license. It seems this was done after Mark Brinsmead's wonderful attempt in asking ORACLE for providing this framework as part of the database.
One thing that Paul Valee pointed out is that ORACLE still wants people to keep AWR enabled . Quote from ORACLE
"Oracle, therefore, recommends that all customers, with or without Diagnostic Pack license, leave AWR enabled so that they can benefit from features that do not require pack license but implicitly use AWR"
This means that maybe there still might be hope .