It looks like you are new, welcome to the forum. I do not know if you are an official, but a block cannot be unsportsmanlike. Unsportsmanlike acts are basically non-contact fouls. These all involve contact.
The first block I saw nothing wrong. The kid was blocking and was making sure the player was out of the play.
The second block (if I have the right block) at best might have been a BIB (Block in the back) but it was hard to tell where the contact took place in the pile.
This is football right?
Peace