Plenty of blame to go around on that second LA goal.
Few things to note at this point:
1) Bostock was chasing around two players by himself. As a result, when Gonazalez gets the ball back he has ample time and space. Osorio or Earnshaw need to step up and help with the pressure.
2) Eckersley went too far wide and high up the pitch and has to fall back in line.
2) Lambe has failed to track Colin Clark's run down the left side. Prior to this image he did point and call out Clark's position, but didn't actually run back, leaving Russell to deal with two attackers.
3) The midfield as a whole has given up too much space in their own half. Either press high or fall back. Galaxy players have gotten in behind and there is about to be a 4 on 3 in the box.
1) At the time of Russell's header Califf is in no-man's-land, making an undermanned situation even worse.
2) The rest of the team was so far away that they're barely in the picture.
3) O'Dea appears to be marking Villareal but doesn't actually stay with him as you'll see in the next picture.
1) O'Dea completely fails to react to the header and continues walking toward the goal. Look at how far away he is from Villareal when they were next to each other at the time of the header.
Very poor play by TFC, be it fatigue or personnel or tactics.