When you think "class action" what weather phenomenon do you think of? Patchy fog? Wind advisory? Nope...Lightning Bolts!! So, what better way to illustrate that point than to make an icon, with a little ball for a head of a guy based on a bolt!
Just be careful it doesn't look like the guy is in some squatting position, as if he's about to sit down and do something ... perhaps in a bathroom.
Some marketers are setting up Twitter accounts without much of a plan. The DoubleTree people are smart: They're just hoping a little logo similarity will give them Twitter Love.