behavior of prior cond's in ResultSet->new_result

Say I create a ResultSet object with 

   search({ some_field => [ @possibilities ] }).

@possibilities happens to be only ( 'x' ) at the moment.

'x' doesn't happen to be in the database, but I'm lazily 
populating, so I do 

   my $thing = $rs->find_or_create({ some_field => 'x' });

In new_result, before the foreach on $self->{cond}, %new is 
right, and the entry is some_field => 'x'.

After the foreach on $self->{cond}, %new contains

    some_field => ['x']

This causes the SQL to break, placing x as an unquoted scalar 
instead of a ? in the VALUES part of the query.

My workaround is to get a new ResultSet before find_or_create.
Or is that what I'm "supposed to do"?

Mark