[ncphil]

"I can't imagine that a deposition lasts more than a few hours..."

Heh. No. A good litigator will be prepared with enough questions to keep him testifying for most of the day on each case. No doubt there will be many objections along the way that will stretch that time out even more. There's zero chance that the boss's testimony (and Twitter's other corporate witnesses) will be consistent even in a single deposition, let alone 100s. Even the most craven arbitrator is going to have a hard time ignoring that, so the strategy will reap huge, literal, rewards. With costs and attorneys fees.