Check out my post below on getting back up and running immediately after a total SQL loss (Domino platform). It has some serious drawbacks, but it did work in my testing in getting email delivery going while a more permanent recovery is in process. (i.e. manual device re-activation on a new SQL db)

BlackBerry Enterprise Server on Domino Discussion: How to Recover* from a Total Loss of BESMgmt SQL database (* with caveats...)