I'm not yet convinced that there's a need to "get around" what the Prophet said.
This, I think, is a crucial point. I sympathize with the notion that the relaunch had not to this stage adequately addressed the sorrow that awaited Sisko when he decided to spend his life with Kassidy, but this narrative doesn't face up to the consequences of that choice.
Rather it asserts that the original choice can be undone and the consequences of that choice evaded.
That ship had sailed. Sisko had already spent a significant portion of his life with Kassidy. A much more satisfying creative choice imho would have been to portray the full extent of the sorrow foretold by the Prophets and allow Sisko and Kassidy to face up to the consequences of their original choice.
This would have undoubtedly meant that Sisko would have had to endure great sorrow, but not necessarily all his loved ones dropping dead around him as there is nothing in the original prophecy that demands such a bleak or bloody interpretation. The Prophets' words are enigmatic, as always.
The interpretation that Sisko insists upon in RBoE is especially odd since there is apparently no causal relationship between the sorrows inflicted upon him and his marriage with Kassidy. Sisko cares very much about Jake, for example. If we follow the reasoning that the calamities surrounding Sisko will continue to intensify until the worst sorrow imaginable is inflicted upon him (until he knows literally nothing but sorrow), then we would have to imagine that Jake would at some point be affected as well (since Sisko cares as much for him, presumably, as for his wife and daughter).
It's an extremely paranoid interpretation of the Prophet' words to say the least, and certainly not one that is reasonable or inevitable.
The Prophet's words remind me of the saying that I think is attributed to Buddha: "All is suffering." That is quite correct, but not in the literal sense that we experience nothing but suffering in life.