ANC TWR CTLR DESCRIBED ACR DEP FROM TXWY Y WHEN DEP CLRNC FROM RWY 32 WAS ISSUED.

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WHEN I TOOK OVER WORKING LCL; AN AIR TAXI HAD JUST LANDED ON RWY 32 AND EXPERIENCED A BLOWN TIRE. RWY 32 WAS TEMPORARILY CLOSED TO CHK FOR POSSIBLE DEBRIS. ACFT Y WAS TAXIED ACROSS RWY 32 AND SENT TO RWY 7L. ACFT X WAS ALSO TAXIED TO RWY 7L VIA XING RWY 32. RWY 32 WAS THEN OPENED. I ASKED ACFT Y IF HE WANTED RWY 7L; OR THE NOW AVAILABLE RWY 32. HE REQUESTED RWY 7L. I THEN ASKED ACFT X HIS REQUEST. HE REQUESTED RWY 32. IN ORDER TO TAXI TO RWY 32; HE WAS REQUIRED TO TAXI DOWN RWY 7L. AFTER ACFT Y DEPARTED; I TAXIED ACFT X DOWN RWY 7L AND TOLD HIM TO HOLD SHORT OF RWY 32. TXWY Y IS A PARALLEL TXWY TO RWY 32 ON THE W SIDE OF THE FIELD. ACFT X WOULD NEED TO PASS TXWY Y IN ORDER TO REACH RWY 32. PRIOR TO REACHING TXWY Y; ACFT X CALLED READY. I TAXIED HIM INTO POS AND HOLD ON RWY 32. I THEN OBSERVED ACFT X VIA THE GND RADAR ON RWY 7L APCHING RWY Y; SCANNED RWY 32; SCANNED TXWY T WHERE THE PREVIOUS AIR TAXI WAS SITTING; SCANNED THE RWY VISUALLY OUT THE WINDOW; SCANNED THE D-BRITE FOR ANY TFC INCLUDING THE PREVIOUS DEP OFF OF RWY 7L; THEN CLRED ACFT X FOR TKOF RWY 32. LOOKING AT ACFT X OUT THE WINDOW; HE APPEARED TO BE IN THE CORRECT POS AS HE TURNED ONTO THE RWY; AND I DID NOT FEEL IT NECESSARY TO RECHK THE GND RADAR. AFTER HE COMMENCED TKOF ROLL; THE APCH CTLR; WHO ALSO HAS A GND RADAR DISPLAY; CALLED UP AND ASKED IF THE DEP WAS DEPARTING THE TXWY. I THEN LOOKED OUT THE WINDOW AT THE ACFT AND WAS UNABLE TO DETERMINE HIS EXACT LOCATION. I THEN LOOKED AT THE GND RADAR AND SAW THAT HE WAS IN FACT DEPARTING OFF OF TXWY Y. MGMNT HAS SINCE DETERMINED THAT IT WAS A PLT DEV; ALLOWED ME TO WORK NORMALLY FOR THE 3 DAYS AFTER THE INCIDENT; THEN DECERTIFIED ME FROM WORKING LCL CTL AND LCL ASSIST WITH NO EXPLANATION.