Yes, but at 4am I'll be dammed if I can explain why.
OK, now I've had some coffee...
Think about the rolling resistance and what happens when you push something into a corner rather than pulling it round the corner, when you're pulling a carriage behind you the yaw against the flange is damped by virtue of the force applied to the drawbar, when pushing this is an open loop unstable scenario and the stability is provided by the high levels of damping when at high levels of yaw, that cause a lot of noise and heat generation, wasting energy being generated by the one remaining engine, converting this into peak damped pendular motion of the leading, un-powered carriage. Due to the nature of how a pacer chassis is set up, there is little bult in yaw damping that would be able to stabalise the system against the flanges without making use of the flange friction to contain the pendular yaw, this would be handled by Yaw dampers or bogie construction on other vehicles, as the system peaks at much lower levels with higher levels of damping within the internals before coming into the flange to remove energy from the pendular motion, it does not cause as much of a problem for bogied stock, even less for those fitted with yaw dampers.
When being pulled this is less of a problem as the force being applied as a result of the torque onto the track is normal to the direction of the flange impact, not causing internal damping of yaw, but instead 'pulling it into line'.
There's one reason for you...