the relative odds of 5 people losing connection on a lamp floor are probably pretty slim unless that person is penta-boxing. Also as stated previously, "that 1 person out of 6" isn't going to finish nyzul by himself regardless, so tokens are really the only option. For what it's worth I vote yes, that 1 person SHOULD not make progress. If nyzul was supposed to have an entry requirement of 1 person, it would already, instead of requiring 3. short answer, yes, that one remaining player should not be capable of making progress. Specifically because his 5 other members lost connection.

Scenario: I get a code lamp floor, everybody touches it, then 5 people d/c. I can still go up because we've accomplished that, so I do. "to make progress." the other 5 log back in, and are now stuck on the lamp floor they've already beaten, because I'm no longer there to "reactivate it." and the game reset their data. Either way all you're accomplishing at this point is whining about how unfair nyzul is, because it sounds an awful lot like "nyzul should be a 1 man requirement and lamp floors shouldn't even exist."

But I do agree that code floors are broken in the d/c aspect.