I did watch the game, and those three forwards (Meilleur, Slattery, and Welch) were listed together in the lineup as the second line, with Adolfsson and Heminger on defense (Crow and Gangarosa were listed as the starting defense), but I wasn't keying in on the line combinations throughout the game. I don't know at what point Crow and Gangarosa moved to the Meilleur/Slattery/Welch line. I don't know what happened to the penalty kill - they went into the game with the top PK unit in the CHA at just over 85%, and had shut down the last 11 power plays.
Despite the final score, I admire this team for not quitting when they were down 4-0 with 3:34 to play - they kept grinding until they put two goals on the scoreboard. Things sure didn't look good being down 4-0 at the halfway mark of the game. Princeton didn't exactly hammer Penn State, scoring only one even-strength goal, but the Penn State penalty kill was a big letdown, and special teams are just as much a part of the game, so credit to Princeton for taking advantage when it was given to them. A couple of Penn State shots that hit the crossbar and a goal that was called off didn't help.