Another rule with good intentions, but poor execution. Teams should get a 15-yd penalty for 1st "targeting" flag (as a warning), then kicked out for the next. Instant replay refs SHOULD NOT be the ones who decide if it's targeting. That penalty should only come from on-the-field calls. $h1t looks different when you're up in a booth viewing it in slow-mo.
It's dumb that they are required to leave the sidelines too. IMO that is going a step too far.