Worth noting that Genesis Mining and Hashflare raised their btc withdrawal limits recently too, over concerns about how long transactions were taking: so that might not be bs. Also I have had unrelated ETH transfers pending for hours(damn kitties!). That said thanks for the reporting, I have been wary about the Tether/Bitfinex situation since people brought the concerns to light and frankly it helps keep these people honest.
RE: Multiple Users Cannot Withdraw BTC or ETH from Bitfinex. Management Blames DDoS and Heavy Demand: "Our CTO hasn’t slept in 4 days and will not sleep until this is sorted."