[rules-users] drools-spring drools-grid-impl dependency

Hi, I was attempting to try an upgrade from drools 5.1.1 today to 5.2.0.M2 but I ran into a problem with using the drools-spring artifact. Since drools-spring needs access to the GridNode it has a dependency on drools-grid-impl which in turn has dependencies on hibernate & JPA 1.0 and includes a persistence.xml file. I was able to work around the hibernate and JPA 1.0 dependencies using maven exclusion rules but it appears that the included persistence.xml is causing problems with my own configuration locating its persistence unit. Would it be possible to extract the grid classes that drools-spring is dependent on out into a drools-grid artifact that instead of depending on the full impl? Either that or does anyone have any suggestions for making sure my persistence.xml in my WAR takes precedence over the one in the JAR? Thanks!