Hi George,
Unfortunately no elegant workarounds comes to mind, especially if the issue is truly nested inside the TRX engine when processing any query results in the logic. One remote possibility would be to use an XMLLoader action in place of the SQLQuery action that calls /XMII/Illuminator?QueryTemplate=xxx/yyy&Param.1=xxx&Content-Type-text/xml but I have no idea how pervasive this issue would be in your apps (or how many specific parameters you need in the request).
If the issue can be determined as a correction in a release newer than your current build, then it might also be a needful step to consider SP04 or perhaps a patch closer to your current install (I don't think I saw your specific build level mentioned).
Best Regards,
Jeremy Good
SAP Rapid Innovation Group - RIG