Looked like a box out to me. From the side, more than from the back. There was a shove from Clark as Reese was falling. The refs reviewed it from multiple angles and determined it was excessive. I have no problem with the box out (it could have been called a foul and I'd be good with it as well), no problem with the intentional foul, and no problem with the flagrant call for the clearly excessive energy on the intentional foul. Clark and Reese clearly don't like one another. I think that's awesome for the WNBA.