I would use the larger DPNs and hope that the rib will compensate for the difference. One size up is really not that much.
Your soaker is not ruined- the stitches will pull back into place. When you pick up stitches- don't just "snag a loop" from your existing knitting... you can pull a loop of your working yarn up through some of the gaps between stitches- this makes a much gentler way of picking up stitches without distorting the original work.
Your soaker is not ruined- the stitches will pull back into place. When you pick up stitches- don't just "snag a loop" from your existing knitting... you can pull a loop of your working yarn up through some of the gaps between stitches- this makes a much gentler way of picking up stitches without distorting the original work.