INTRAFAC COORD ERROR AT BTV; VT.

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A CLASSIC 'MULTI-TASK' WITH 'HEAR WHAT YOU WANT TO HEAR' AND 'SEE WHAT YOU WANT TO SEE.' WHILE WORKING GND CTL; I TAXIED CRJ2 TO ACTIVE RWY WITH HOLD SHORT INSTRUCTIONS AT UTILITY RWY ENRTE TO LONGER ACTIVE. I CHKED BRITE FOR TFC; SCANNED FINAL FOR RWY 1; AND OBSERVING NO TFC; REQUESTED CLRNC TO CROSS RWY 1 AT TXWY C WITH THE RJ. ANOTHER ACFT WAS SPEAKING TO ME AS LCL CTL ANSWERED MY REQUEST WITH 'HOLD.' I INSTRUCTED/CLRED THE RJ TO CROSS RWY 1. AT THAT TIME I SAW THE TFC ON FINAL TO RWY 1 AND TOLD THE ACFT TO DISREGARD MY INSTRUCTIONS AND HOLD. SEPARATION WAS NOT LOST; BUT HAD THE TIMING BEEN WORSE; AND IF THE LCL CTLR HAD NOT ALSO BEEN AWARE OF MY MISTAKE; IT COULD HAVE BEEN WORSE. THE DATA BLOCK (ARTS DATA) HAD DROPPED ON THE RWY 1 ARR DUE TO ITS CLOSE PROX TO TOUCHDOWN; AND THERE IS A POST BTWN WINDOWS IN LINE WITH GND CTL POS AND RWY 1; MY QUICK SCAN OF BRITE (NO TARGET OBSERVED) AND LOOK OUT WINDOW (NEVER LOOKED AROUND POST) PRIMED ME TO HEAR A XING CLRNC. WHILE REVIEWING TAPE; SECOND ACFT WAS XMITTING BUT THE LCL CTLR DID CLRLY STATE 'HOLD.' I ALSO BELIEVE THE RJ PLT/CREW HAD SLOWED AND/OR STOPPED HAVING SEEN THE ACFT ON FINAL TO RWY 1 BEFORE I MODIFIED/AMENDED HIS CLRNC TO TAXI. I ALWAYS IMAGINED I WAS 'TOO WISE' TO GET CAUGHT DOING SOMETHING SO FUNDAMENTALLY WRONG.