It is very difficult to answer without knowing your topic.
In general however if you are not interested in social justice issues in the research design and research topic, then don’t draw from theory which in inspired by social justice and social transformation. This is a matter of design features – your theory will influence every other aspect of the design, and can not and should not be used for limited use with some aspects of the research design features. Theory is like water on a sponge when used properly – it will permeate and drizzle into every other feature of the research, and that is what we want and why we choose theory so carefully.
Have you considered developing theory for the research – you don’t have to use macro-theory eg critical theory of Foucault, Beck or Habermas – but micro-theories which you build up yourself and which you design around what you have said you like about HOW theory is used in social justice research. Alan Sears et al “A good book in theory” has some ideas about the various ranges and types of theory – not just the macro but mezzo- and micro-.
Alternatively have you considered using the theory you like and then allow yourself to explore how it speaks of social justice issues in your topic – don’t avoid it but embrace the opportunity of social justice perspectives in the theory?
If you want me to be more precise you will have to reveal more of the topic and intended theory, but I hope these general comments help.