Dacre teeth gnashing at Leveson

When Sherborne QC was disembowelling Dacre’s soul (in which Hugh Grant has lodged his svelte self) as best he could in a few minutes that is, and it was hard to locate, I swear that as Dacre’s fingers tangled mightily tightily together at the very suggestion of an apology for his ‘mendacious’ accusation v Grant, he did in fact GNASH his teeth.
I shall have to examine it again but I had that distinct impression, the tightness around the jaw, and tension in the cheeks made it hard to discern.
Not often a sight one often sees, even rare, I am rather new to it, but …there you go…