"This was a difficult decision based on a lot of factors," Rams coach Steve Spagnuolo said Friday in a news release. "I have a great deal of respect for Pisa and wish him all of the best."
Tinoisamoa, a six-year veteran drafted by the Rams in the second round of the 2002 NFL draft, recorded 135 tackles in 2008, 88 of which were solo.
Tinoisamoa spent much of the previous two seasons on the injured-reserve list.
Another guy I think the patriots should be looking at. Especially with the injury of Tyrone Mckenzie, I really think its important to get deeper at linebacker. I just don't see how we could enter the season being as thin as we are at that position.