Also on hand for the DWTS practice were dance pro Karna Smirnoff and retired competitive ballroom dancer Corky Ballas.
The sightings come just after tabloid rumors claimed that other contestants are weary over The Situation's alleged spy tactics.
“Jennifer Grey and other competitors caught Sorrentino red-handed, and told him to back off,” a source told the National Enquirer. “He reportedly spied on voted-off Michael Bolton, Bristol Palin, Kurt Warner, Rick Fox and others, so angry contestants complained to producers."
The Enquirer's insider adds, “What’s worse, after his sneaky spy forays, the big-headed bum mouthed off to backstage staffers about how bad his competitors are.”