Cutler is the latest surprise performance to hit THON, a trend that began in 2017 when Joe Jonas and DNCE dropped by unannounced.
THON 2022 kicked off with a pre-THON press conference before dancers stood in the BJC for the first time in two years.
"I never thought anything could top the energy from the Billie Eilish concert last week, but this is doing it," Nanes said.
While the band will skip this weekend's event, its director said the Blue Band looks forward to returning for THON 2023.
Penn State captured its first win since January 20 Thursday night at the Bryce Jordan Center.
A final lab report indicated Gross had traces of marijuana and "an elevated level of ethanol (alcohol)" in her system when she died.