No, i don't have master backup.

solution I came up with was to remove troubled instance and install it all over again.

but seams likely below article might have halped if i had master backup (hope someone will find it useful 🙂 )

http://social.msdn.microsoft.com/forums/en-US/sqldisasterrecovery/thread/958ac670-f5b8-4022-a532-0fd772644d8e

either way no harm done, luckly it was test enviroment, not production 🙂