Myself and a friend of mine JediKnight G have often talked about the differences in philosophy between our two aspects of the force. His views are very clear to most Jedi, but if you seek clarification talk to him I will not speak for him, However I wish to clarify the morality of the shadow side.
First off I have often stated that the shadow side is a balance between the polar realms of light and dark force aspects. This does not mean that a shadow user must commit himself to dark action in any way, nor does it mean that he must commit himself to light action in any way. The first lesson a Shadow Jedi must learn is that all aspects of the force light and dark have the potential to have either a negative outcome or a positive. This philosophy means that you can take dark action and have a positive out come. Likewise you can take light action and have a dark outcome. A shadow jedi does not alter his own personal beliefs of what is right and what is wrong but rather accepts the truth that they are one in the same. I personally am of a rather light nature, my intentions are always light. However my actions are not always light. I can take dark action to fulfill my light intentions.
A Shadow Jedi can be of a dark nature and take light action to preform a dark intention. What a shadow jedi is taught is that the force aspects light in dark can have any potential outcome that is what we are trained to master. I have wrote down many examples of this. However the point that must be remembered is that when you have a Light Jedi he is committed to light action with light intention, whereas a Dark Jedi is committed to dark action with dark intention. That is what it means to follow those paths. The path of a shadow jedi is that of a free Dark Jedi or a free Light Jedi. We Never change our intentions, however we have the freedom to use any action necessary to reach our goals. I hope I have clarified At least a little bit, but if you like it simple I will leave you with this passage. "There is room in the universe for all paradox."...Teaching of the Mikkyo Temples.