Did Texans OL Duane Brown Shove a Ref in this Skirmish Versus the Bills?

This skirmish happened after an Andre Johnson fumble in the second quarter of Bills-Texans. In it, Houston offensive tackle Duane Brown appears to inadvertently shove one of the officials. Brown received a 15-yard penalty for unnecessary roughness, but was not ejected.

Related: Steve Smith Catches Deflected Ball, Scores, Tells the Haters to Shhhh