Penn State held a lead for most of the fourth set and almost forced a fifth until Princeton scored nine of the final 11 points of the match.
Nzeh will be searching for his third program with two years of eligibility remaining.
"There's nothing wrong with someone having an opposing viewpoint on an issue, and that should be taken into consideration."
Nelson was removed from the roster on Friday.
Falzone became the second quarterback to commit to the Nittany Lions' recruiting class of 2026.
Braeden Phillips, 20, was charged with conspiracy to commit murder and unlawful possession of a firearm.