Obviously it was not Little Snitch or at least not Little Snitch alone that cause the malady which befell my poor Mac. The morning found it again without the ability to left click and sadness returned. Fortunately I was able to reboot it and was able to get my mouse back to normal again. I believe this is going to have to become a more in-depth research problem. Hopefully it isn’t a problem in El Capitan and I won’t have to deal with it eternally. I’ll let you know what I find out if anything.