Looking at a post from Phil, I'm going to see if I can rotate an image that's in the Attachment Manager.
Well, I find that a reader can rotate the image in the view mode to correct the image but it doesn't save it. At least, I didn't find anything to save it.
On the two images -- the second one I tried to turn it upside down, which it showed that but it did not stay.
I went to the old standby that John Lucas said he did to fix images. I moved the image to the desk top and then rotated it (right mouse) there. Then moved it into the Attachment Manager.