CVG LCL CTLR RPTS CANCELING TKOF CLRNC TO CARJ AFTER GND ADVISED THAT HE OR SHE WAS XING DEP RWY.

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LET ME PREFACE THIS NARRATIVE WITH THE THOUGHT THAT THIS MAY NOT HAVE BEEN ANY TYPE OF ERROR. THE GOV IS LOOKING INTO THIS AS IF IT WERE DUE; IN PART; BECAUSE OF MY REACTION TO A FELLOW CTLR'S STATEMENT FROM GND CTL. GND CTL HAD ASKED TO CROSS RWY 27 AT TXWY E. I; AS LCL CTL; APPROVED THE XING. I THEN WENT BACK TO PAYING ATTN TO ACFT X LNDG ON RWY 18R. THAT ACFT ROLLED THROUGH THE INTXN OF RWY 27 AND WAS TOLD TO TURN L ON TXWY D AND HOLD SHORT OF RWY 27. I THEN LOOKED BACK AT THE D-BRITE TO SEE IF I STILL HAD ROOM TO DEPART ACFT Y ON RWY 27. ANTICIPATING THAT I DID; I CLRED ACFT Y FOR TKOF ON RWY 27. AS I SCANNED THE STRIP ON THE STRIP PRINTER; GND CTL SAYS 'HEY; I'M XING HERE.' SINCE I WAS ANTICIPATING THE XING BEING CLR OF RWY 27 AND TRYING TO HIT THE TIGHT GAP FROM APCH CTL ON RWY 18R; I CANCELLED THE TKOF CLRNC OF ACFT Y OFF RWY 27. IT WAS MUCH FASTER TO DO THAT; THAN TAKE THE TIME TO LOOK AND SEE IF THERE WAS A PROB OR TRY TO DO SOMETHING WITH THE XING ACFT. THE STATEMENT FROM GND CTL ABOUT HIM XING; MAY HAVE MEANT HE SAW SOMETHING THAT I DIDN'T. ACFT Y NEVER GOT NEAR TO THE XING ACFT AND WAS ACTUALLY TURNED OFF RWY 27 AT TXWY K4. COULD HAVE BEEN TURNED OFF AT TXWY K3 EXCEPT FOR OTHER ACFT ON TXWY K IN THE WAY. AMASS NEVER ACTIVATED. THIS MAY HAVE BEEN AN ACCEPTABLE DEP. IN THE INTEREST OF KEEPING THE SUPVR ADVISED OF THE REJECTED TKOF OF ACFT Y; I INFORMED HIM OF IT. HE THEN DECIDED TO INVESTIGATE THIS AS AN ERROR.