Yes, I think Data was implying he would physically move Q out of the engineering department by force.
Data will not injure somebody because of his moral programming, but he might injure them to prevent harm. He would not be interested in physically harming Q or overpowering him, but he would forcibly remove him from engineering if instructed by the chief engineer, Geordi.
Q was reduced to a human in that episode, so Data could have overpowered him. However, I doubt Data would need to move him by force because he has several means to move him without harming him.
- He can have use the transporter's site-to-site beaming feature to put him directly to the brig.
- He could have rendered Q unconscious with a Vulcan neck pinch. (He used this in the episode where he and Spock were on the planet, Romulus.)
- He could have handcuffed him.
The point is that Data had multiple means to detain Q without harming him, but would have if necessary. Merely by threatening force, one can compel another to change their behavior without actually using force.
I gotta say the crew was admirable in their professionalism towards a vulnerable and detested Q in that episode.