lildave40, when I saw her walking toward me I was in the process of running to the guys porch. He was using force to move her into his home against her will. Use your imagination as to why (she has been described as a recently acquired girlfriend). Under the circumstances (with legal support below), I believed he was committing aggravated kidnapping and was prepared to legally use deadly force against him if he refused to comply.
I am not against trying to aid a third party, but having no more information than you had at the time, I think the potential for real trouble (for you) might exist....(had you followed this course of action).
I can think of a lot of scenarios that might 'appear' to an observer to be something it is not.
Just be mighty careful what you choose to get involved in. It can turn sour real quick.