Biztalk Split a message into multiple files.

I am receiving a flat file that I map to XML.  I am then mapping to a WCF-SQL generated Schema.  It will only accept one record at a time, so for example if I send the output like this:

<?xml version="1.0" encoding="UTF-8"?>
<ns0:SP_ReleaseHeaderRoot xmlns:ns0="http://schemas.microsoft.com/Sql/2008/05/TypedProcedures/dbo">
 <ns0:SP_InsertReleaseHeader_WCF>
  <ns0:ReleaseNumber>02282011</ns0:ReleaseNumber>
  <ns0:CustomerPurchaseOrderNumber>911911</ns0:CustomerPurchaseOrderNumber>
  <ns0:PartnerID>PARTNER</ns0:PartnerID>
  <ns0:ReleaseDate>31032013</ns0:ReleaseDate>
  <ns0:ReleaseItem>000160890841</ns0:ReleaseItem>
  </ns0:SP_InsertReleaseHeader_WCF>
 <ns0:SP_InsertReleaseHeader_WCF>
  <ns0:ReleaseNumber>02282011</ns0:ReleaseNumber>
  <ns0:CustomerPurchaseOrderNumber>911911</ns0:CustomerPurchaseOrderNumber>
  <ns0:PartnerID>PARTNER</ns0:PartnerID>
  <ns0:ReleaseDate>31032013</ns0:ReleaseDate>
  <ns0:ReleaseItem>000163299103</ns0:ReleaseItem>
  </ns0:SP_ReleaseHeaderRoot>

Only one record is mapped to my SQL DB.

If I send two files, one for each record, I get the proper data in SQL.

I've looked at pipelines or schema envelopes, but I cannot seem to find an example that works.

I'd like to be able to generate one file per "ReleaseItem" in my source.