Sources: Sandusky likely to take stand in defense

(CBS News) The defense in the Jerry Sandusky child sex abuse trial is expected to begin its case Monday. Testimony against the former Penn State coach ended Thursday with his final accuser telling jurors Sandusky raped him repeatedly.

Pictures: Child-sex scandal rocks Penn State
Jerry Sandusky Trial: "Victim 9" testifies he was raped, recalls screaming in coach's basement

CBS News has been told the former Penn State assistant football coach is expected to testify, according to legal sources inside and outside the courtroom. Sandusky is charged with 52 criminal counts of alleged sexual abuse of children.

"Frankly, being in that courtroom, I would say it would be impossible that he wouldn't try to at least explain his actions," CBS News chief investigative correspondent Armen Keteyian said Friday on CBS This Morning." "Because he is getting, to use a phrase, crushed inside the courtroom right now."

"At this juncture, the prosecution has gotten just about everything they want into the case," CBS News legal analyst Jack Ford said. "... They were able to do it quickly because they had an array of accusers. They came in, didn't have a lot of documents to put in, didn't have a parade of experts. ... We haven't gotten to the defense case yet. The prosecution, I'm sure, is comfortable with this and they're probably looking at this saying, 'You know what, if Jerry Sandusky gets on the stand, that's great for us - because we have all sorts of stuff to come after him with.'"

(Watch Keteyian and Ford's full analysis of the Jerry Sandusky child sex abuse trial in the video below.)

But Sandusky, it seems, isn't only on trial here, Keteyian said. Penn State University's conduct over the years and as the case has developed is being highly scrutinized. "When you look back from 1998 to 2001 and all the things that happened with Sandusky and top level administrators being informed of it, and the fact that no charges were ever filed and a lot of these cases were basically submerged, yes, I think they are on trial," he said.

The school's slow response to requests for information like e-mails and records is of particular interest, Keteyian said. "Look, from the start, I was at this thing from the beginning, and it would be fair to say that Penn State has wrapped a bubble around itself," he said. "(They've) been reluctant to present information, not only to the media that have made requests, but to the attorney general's office and other independent investigators."

Ford said the Sandusky trial is setting the stage for arguments that will likely be made in civil court against Penn State - that the school should have done more to avoid these alleged abuses of children on the school's campus and elsewhere.

In Thursday's testimony, accuser number six described an incident inside Penn State showers one day when he was 13. He said Sandusky hugged him from behind, saying, "I'm going to squeeze your guts out." After he told his mom, she told authorities.

Howard Janet, attorney for accuser number six, said, "There was an opportunity, a missed opportunity in 1998, not missed by one person, missed by multiple people."

For more on the Sandusky case, watch Keteyian's report in the video above.