Robinson, the team's franchise player, put a "Pay me Rick" message on his shoes, aimed at General Manager Rick Smith.
The six-year veteran is upset about Smith's refusal to sign him to a long-term contract and makes $10 million this season.
"I knew it was coming," Robinson told reporters after Wednesday's practice.
He said he spoke with Smith this week and was told he would be fined.
"There's nothing to be surprised about," Robinson added. "I've moved on."
The South Carolina product has 331 career tackles (277 solo) and 13 interceptions.
Opponents call him one of the league's best shutdown defensive backs.
The Houston Chronicle reported that he cannot negotiate with the team until after the season.