i looked up Xermade's record game
(46052878), and he achieved his record under almost precisely the same conditions (an overmatched PG who fouled out after 15 minutes, followed by weaker players or players out of position; he scored 78 of his team's 87 points).
fwiw, Xermade is still active. he says the NBBA today is but a shadow of when he was a star, and that today's best teams would be drubbed by those he played on. he also said he remembered his record-setting game as scoring "97 points against some really tough defenders" and had to be shown the box score when told he scored "only" 78. he called D. Rogers "a big wuss".