Came across this article on the top ten bjj techniques for police officers. Some may find it a small but interesting read. I am sure some of the bjj players on the board could add or subtract from the list. Defend U is actually a pretty good site based on awareness and de-escalation principles.
http://www.defendu.com/10_bjj.htm
I don't know much about the bjj clinch but from what they are showing in that photo there are other clinch varieties that look a lot better in terms of control. Greco-Roman over and under, collar and elbow or the Thai head clinch for one.