Although... looking at it again... deltaTime would have to be VERY BAD (millions of seconds) to make an avatar move as far away as we saw happen.  Also, looking at where deltaTime is computed, I don't see how it would be possible for it to bad:

glm::clamp((float)timeSinceLastUpdate / 1000.f, 0.f, BIGGEST_DELTA_TIME_SECS)

where BIGGEST_DELTA_TIME_SECS = 0.25