âCautiously Optimisticâ: Local Advocates React To DOCâs Intent To End Solitary Confinement At least two reports, as well as years of advocacy, have culminated in the DOC committing to phase out 'restrictive housing' â also known as solitary confinement. Getty Images / Getty Images Share Elizabeth Matos on ATC | June 30, 2021 Local advocates for inmates are reacting to news that the stateâs Department of Correction is planning to phase out the use of solitary confinement In an interview with GBHâs All Things Considered host Arun Rath, Elizabeth Matos, head of Prisonersâ Legal Services of Massachusetts, discussed the DOCâs decision to end the practice in a multiyear process.