And, I think they will.
But, I was looking at those pictures in the paper again after hearing others express their observations about the slide, and noticed these things.
First you can clearly see that Matt is on the infield in front of the plate.
Second, you can see the runners RIGHT foot across the foul line. So, then think about where the runners left leg is.
Third, you can see the back of Matt's left foot behind the runners right knee.
The throw was on the way, Matt could have blocked the plate. In fact you can see the ball at the mitt in the other picture. He allowed plenty of room for the runner to make it to the base.
All the runner had to do was go wide to his right and stick his left hand out across the plate.
Umpires call?
Safe at home.