When the Saviors hang the man from the bridge, he drops more than enough distance that it would have broken his neck, and possibly ripped his head clean off, yet he still struggles for several seconds before finally choking to death.
Around 30:30 (30 minutes, 30 seconds), soon after being ambushed on the road, one of the dead walkers recently killed by Rick can be seen moving their leg to ensure it's clear of the RV as it drives away.
Several times along the road, we see longleaf pine trees. These do not grow in central Virginia where this episode is set (but do grow in abundance in central Georgia where filming takes place).
Seemingly forgetting all of their past troubles traveling, Rick and his fighters all pile into a single vehicle (that has already broken down several times before). Then, they aren't even prepared to fight the same number of people blocking the road in order to save Maggie's life.