I think he believes in the psycho-pass system to the point where he'll trust that over his own instincts (reflected by his conversation with Kogami before about their differing methods, as well as the Dominator idea from this episode). It's cold, but it works with regards to this society and his role in it.

I took his immediate (and rather enthusiastic) command to send in as many reinforcements as he can to be a sign that he still cares greatly for Kogami.

It's kinda funny how those mechanical dogs were inferior to real dogs as far as odour-tracking goes. Kogami seemed to be able to outrun them as well.