It's not standard for the FDA to announce an expansion to a recall then immediately rescind it.

The lettuce from Taylor Farms de Mexico was already recalled, and we're not getting much clarity or transparency on what has happened after that. If this were a civil matter, it would be totally normal to bring in a third-party to help investigate, but the executive branch officially doesn't have that for the FDA, so Taylor Farms seems to be petitioning the executive branch itself for clarification.