Mojo seems to be just fine.  I think it may have been my imagination with something going on with his legs/hips.  So sorry if I created any undue concern.  We walked and ran again for 2 reasons:  I seriously have something wrong with my left thigh and I was watching to make certain Mojo was okay too.  He was, I wasn't. He was outside when I got there and the painters weren't there yet so I left him outside after our run.