This is a really poor reason for voting for Dral, imo. I thought it was a very ovbious joke. If Dral gets hung and comes up TP, everyone who used it as their primary basis for voting for him rockets up to the top of my suspicion list (save for Kesler, obviously). However, if he turns out to be mafia, it does a lot to exonerate players who jumped on the vote early because I can't see Dral agreeing to be a sacrifice.
The way the bandwagon has formed has me hesitant to vote for him, despite him acting a lot like he did the last time he was mafia. I think the wording of Kryten's vote comes across as the most suspicious of the bunch.
Vote2 Kryten