ZFR: "First, note that it's fairly common for wagons to die after the wagonee is placed at L-1. Maybe when faced with the real threat of a lynch the wagonee does something Townish, or maybe someone else decides to hold the idiot ball for a moment and everyone's attention darts away. It's common, and not a particularly bad thing...
...
Once a power role is outed, the scum NK is probably going there. "
Ah, I see. "wagonees", "L-1", "power role" and "NK". Yup. Everything is clear.
I'm familiar with the general concept of the game, and Bookwyrm gave me a crash course on how it's played on GOG, but beyond the quick note in OP, I'm still not sure I get what cryptoclaiming means.
Lift has covered the others fairly well so here's a few more definitions of the other terms used;
L-1 - One vote away from being lynched. L-2, L-3 etc. are also used but less frequently.
Flip - The role and alignment reveal usually given on the death of a player.
NK - The Night Kill (or a Night Kill if there is more than one) in almost all set ups the Mafia / Scum team get a factional kill at Night, NK is the short version.
Hammer - The last vote that lynches a player. Often the most scrutinised spot on the wagon because of what it can tell you about a player's alignment. For example a quick hammer (one that follows the previous vote very quickly and with little explanation) is often viewed with suspicion as scum trying to finish off a townie (or silence a team mate).
Bus - A short version of "throw under a bus", basically when scum turn on one of their own to try and gain credit when they die and flip.
Those are the important ones I can think of off the top of my head.