A pre pack is possible only from administration. Liquidation is the end, there is no way back. Football clubs have a Houdini way of avoiding closing down completely but it has happened (Newport for example) and I can't see how it can be avoided in this case with Coventry Newco restarting in Mickey League and working upwards a la AFC Wimbledon and FC United of Manchester (albeit circumstances slightly different).
Would mean another team gets promoted to League One (is it Northampton as PO losers or Burton as 4th?) and one more into League 2. Guess League will want to avoid this now, so will probably stitch up a compromise that means Cov will be relegated.
The easiest way to deal with it this season would be to make all Coventry games a walkover for their opponents. 3 points to everyone. Non-existent Coventry finish bottom. Promote an extra team to the Conference next season and everyone shuffles up one.