Leave it a while and hope the bubbles go back. If they dont it might be possible to slice through the bubbles with a very sharp hobby knife, then apply some PVA adhesive to the wall and push the paper back. See our project on PVA via the projects link above.
thanks .. actually I left it over night and it's a lot better now .. most of the bubbles have flattened and the others don't look that bad now .. I was told that it happens if you paint over silk paint .. you're supposed to sand it down first to get the sheen off ..