1. It will be a radical solution: remove the roof coverings as far back as necessary, probably to the king rafter and the last common rafter, then free the jack rafters and replace the hip rafter.
2.Attempt another codged bolt-on with nearly full length hip sections bolted to either side of the two pieces of hip rafter.
Any propping and jacking up will cause difficulties with the hip tiles and roof coverings.
Jacking up might even cause sagging and cracks in the loft joists and ceiling below.