I realized that I may have taken this discussion to far too fast. There is an advanced concept of momentum towards which I was heading, but that can wait.
There in fact does exist a modification of Newton's law wherein it remains true that for every action there is an equal and opposit reaction, but recognizes that the two do not have to occur simultaneously. The principal of non-simultaneity.
There is an example of this principal put into practice. It is called the Dean's Space Drive.