You can do an alternate

do an import where in the all the DDL would go into a file, edit the file and run the same into the new schema.I know this would be a tedious task, i am just giving you an option...

imp username/password INDEXFILE=

where file in indexfile parameter would contain all the DDL's, edit it to include the new tablespace and execute the same in the new schema

regards
anandkl