Lansanah first came into the league in 2008 as an undrafted free agent out of the University of Connecticut, signing with the Green Bay Packers. He appeared in five games for the Pack, registering two tackles. He spent 2009 on the Dolphins and Lions practice squads, before spending three years in the UFL, with the Hartford Colonials and the Las Vegas Locomotives.
He returned to the NFL this past offseason as a member of the New York Jets, during which time he granted an interview to our friends over at Gang Green Nation, so that's well worth a read if you want to get to know our latest addition. He started the season on the practice squad, before being activated to the full roster on September the 7th. He was released two days later, and then was signed back to the Jets' practice squad, where he's been until today.
The fact that the team are replacing Casillas, who split reps at strongside linebacker with Dekoda Watson, with an inside linebacker, suggests that Lansanah might be thought of primarily as a special teamer, rather than a direct replacement for Casillas.
With Lansanah's signing, this now makes for twelve former Big East players on the Bucs roster; only Jeremy Zuttah and Mike Williams predate Schiano's arrival.