ODBC/Spatial layer Geometry Type options include Point Cell and Point Text.
When Point Text is the desired output, symbol and thus text symbology is defined within the Map Author for the given layer.
As of the Geo Web Publisher SS5 release, there is no Text Justification option for ODBC/Spatial text and output is limited to LL (Lower Left) justification as shown in the following example.
For users desiring a text justification option for ODBC/Spatial Point Text layers, it is suggested to file a Service Request specifying enhancement 429389.