In short, all theories leak. You must use any theory appropriately. Do not apply a limited theory to something it does not map onto well. Do not overgeneralize a theory. Do not misrepresent a theory.
All theories embody ideologies.
Thus, pick your theories and the professors who read them with some care. Don't assume she or he does. Whatever you do, discuss your theoretical approach with your Master's readers beforehand. Second, no professor respects all theories equally. To some extent, the reasons for this point are explained in the previous warnings about theories.