I also understand it to mean that he is affected by the Shadow Curse and therefore no longer serves the Raven Queen and has also developed his penchant for cruelty. A quest line to free him from the curse and then he enters as a companion to the Durge, the Durge support this with rising both hands + the hands he founded by chance.

Roah Moonglow would be a possibility for a halfling villain and a good possibility for the continuation of the Lost Cargo quest. Would probably also suit the Durge if he wanted to betray Jaheira and Minsc.

"Now, was that civilized? No, clearly not. Fun, but in no sense civilized" ~ Braingremlin