No, Vazquez played it by the book. He goes to back up first there because it's the right thing to do, just like he would on most infield ground balls (note I said most, there are times the catcher doesn't do that). If anyone should have headed home it would have been Pedey or Workman.
The play was caused by:
1) Workman not getting to 1st quickly enough and/or
2) Pedey missing the moving target Workman.
The other key to the play was the ball deflecting off of Workman's glove, caroming away from Vazquez and forcing him to go chase it. If Workman never touches it, it goes straight to Vazquez backing up 1st, and he either has a shot at getting Hamilton at 2nd or at worst, Hamilton stops at 2nd. If no one is backing up 1st, Hamilton gets to 3rd easily.
Just one of those weird plays that pop up every once in a while.