The men are said to have escaped through a window from the Hobyo house in which the pirate gang had imprisoned them after their ship sank last summer. There was speculation that they were assisted in their escape by some of the pirates, and even a rumor that the pirates had agreed to a lower ransom payment and had released the men willingly. More facts will probably emerge soon.
What is known is that they are free, in reasonably good health, and being looked after. The surviving crewmembers are said to be an Iranian, an Indian, six Bangladeshis and three Sri Lankans. The Bangladesh government had tried, last year, to organize an attempt to free their sailors but the initiative went nowhere - see MV Albedo Families Launch Appeal to Pirates and MV Albedo Sinks, Lifeboats Found for more background, and news links about the crew's captivity and their frantic families' attempts to free them. It has been a long, painful saga, and we're very happy that it has ended.
Their release is great news, of course - but although the survivors seem to be in good physical health, they will require a lot of care in the coming months. They have been through an unimaginable ordeal, and won't shake it off easily.
We haven't heard yet, but hopefully ISWAN and MPHRP will be active in their recovery, along with their families, friends and the governments of their home countries. God bless them!
Here is a TV news report from eNCA with more details of the hostages evacuation to Kenya and subsequent events: