o my test for executing a mojo in isolation is now complete and passes and gives some real indication of the problem that exists in trying to expose the plugin manager to any external client. the test is pretty nasty but now i can work against this while i refactor. i can now merge to trunk.
maven/components/branches/MNG-2766/maven-core/src/main/java/org/apache/maven/execution/MavenSession.java