If you don't mind, could you expand on the above? How do you know that they are sandbagging him, and I'm not sure what a Chinese wall is... And I looked up sandbagging, and there are two distinct meanings. I assume you mean attacking, not underperforming?
A Chinese wall is an institutional device that isolates certain people from certain information, usually to avoid a conflict of interest or appearance of a conflict.
See wiki on Chinese wall, or investopedia on Chinese wall, or USLegal, Inc. on Chinese wall.
A Chinese wall is absolutely appropriate to enforce recusal. Courts do this when a judge recuses, and the DOJ and FBI do this when an employee recuses.
By "sandbagging," rather than follow a dictionary definition, what I mean is that the keepers of the DOJ Chinese wall are sequestering Sessions more broadly than his recusal demands. They are hiding information from him, that he is entitled to have. For example, if the issue is malfeasance of the FBI in investigating Hillary, the Chinese wall is deployed to hide the FBI/DOJ malfeasance from Sessions. The rationale is that if the FBI misconduct benefited Hillary, and Sessions is recused from prosecuting Hillary, he is also recused from investigating the FBI in Hillary-related matters.
Similar "sandbagging" (hiding information in this case) occurs in relation to the Trump campaign, and any malfeasance by the FBI/DOJ in falsely framing Trump.