Another possible solution is to place the camera behind the object by getting the object's transformed center and translate it somehow (i.e. as needed in your case) by evaluating the results from the get?Axis()-methods of the object. Somehow like:
SimpleVector tc=object.getTransformedCenter();
SimpleVector pos=new SimpleVector(tc);
SimpleVector zAxis=object.getZAxis();
SimpleVector yAxis=object.getYAxis();
zAxis.scalarMul(5f);
yAxis.scalarMul(2f);
pos.add(zAxis);
pos.add(yAxis);
theWorld.getCamera().setPosition(pos);
theWorld.getCamera().lookAt(tc);
Please note that i haven't tested this and typed it out of my head, so i could be totally wrong here...