Oracle Database Discussions

We are running oracle 9.2 on windows.

Out of the 3 datafiles in a non-system tablespace A, one datafile A-DF1 was accidently droped from the file system by our DBA.

The other two datafiles were brought online by using the ALTER DATABASE RECOVER command by bringning the database in mount phase.

Now we want to remove that datafile A-DF1 from the tablespace and bring that tablespace online.

The database is not in archive mode and no cold backup was present.

The solution that we want to try is:

1-drop the tablespace A without dropping the datafiles
2-create a new tablespace and reuse those datafiles
3-assign this new tablespace to the affected user

Would this work? Do you have any other safe solution for this problem?

thanks
Imran