Based on my knowledge. There were reasons to use "military force"
Because 鄧小平 needed to utilize this opportunity to dethrone the military influence from "Yung Jia Jiang" (be specific, Yung Sung Quan et al.) That's why. After that, Yung was almost a public enermy to the people. Was it a smart move? Definitely. Yung's influence in military was a tumor so needed to eradicate.