A complaint made by Sale relating "to the passing of information to the opposition team" is currently being investigated by the Rugby Football Union.
Sale suspended wing Arscott, who joined the club from London Welsh in 2013, after his team-mates expressed concerns to the north-west club's director of rugby Steve Diamond.
When Diamond was questioned about the situation on Tuesday, he revealed that Arscott had been suspended.
"We investigated it internally and we are going through a disciplinary, and under the regulations, we have to report it (to the RFU), so we did that," Diamond said.
When then asked how disruptive it had been for the rest of his squad, Diamond, whose side have lost their last 10 matches in all competitions, added: "The squad are galvanised.
"They came to me with the problem. I knew nothing about it. And I reacted to that - senior players coming to me."
Neither Arscott brother played in the game, with Tom not included in Sale's 23-man squad and Luke an unused replacement in Bristol's.
In Bristol's statement, which was read out by head coach Mark Tainton at Tuesday's scheduled weekly press conference, the club said it was "entirely comfortable" they had done nothing wrong.
- AAP