The report by former FBI director Louis Freeh concluded Spanier and other top Penn State officials concealed Sandusky's abuse of children to shield the university from bad publicity.
Lawyers Elizabeth Ainslie and Peter Vaira said Monday that Freeh "unfairly offered up" their client and others "to those insisting upon a finding of culpability at the highest level of the university."
The laywers say Spanier is looking forward to the opportunity to "set the record straight."
Freeh says Penn State officials exhibited "callous and shocking" disregard for child victims.
Sandusky was convicted of abusing 10 boys. He has maintained his innocence.