MISUNDERSTOOD COM WITH GND CTL AND ACFT ALMOST ENCROACHED ON ACTIVE RWY WHEN OTHER ACFT WAS LNDG.

Narrative

GND CTL CLRED US TO TAXI FROM GATE TO RWY 29L; THE OPPOSITE SIDE OF THE ARPT. WHEN WE ARRIVED AT RWY 29L WE GOT CLRED TO TAXI ALL THE WAY BACK TO RWY 29R BACK PAST OUR GATE TO THE RWY. ON THE TAXI BACK; WE REQUESTED TO USE RWY 22. THE GND CTL TOLD US TO HOLD SHORT OF RWY 22 AT E. UPON REACHING E; THE GND CTLR TOLD US TO BACK TAXI ON RWY 22 TO POS AND HOLD. THE CAPT PROCEEDED TO BACK TAXI ON RWY 22 - AS WE APCHED THE HOLD SHORT LINE WE CLRED THE AREA TO THE L AND R AND WHEN I LOOKED R; A C- 130 WAS ON SHORT FINAL FOR RWY 29R. AS I SAW THIS; THE GND CTLR SAID 'DO A 180 DEG AND HOLD SHORT OF RWY 29R.' THE CAPT THOUGHT HE MEANT TO DO A 180 DEG TURN AND HOLD SHORT AFTER BACK TAXIING THE ENTIRE LENGTH OF RWY 22. WHEN THE CAPT PROCEEDED ACROSS RWY 29R HOLD SHORT LINE; I SAID 'STOP' AND APPLIED THE BRAKES TO STOP. WE MADE A 180 DEGS THERE AND CROSSED THE HOLD SHORT LINE. THERE WAS NOT A CLOSE CALL - WE ONLY CROSSED THE HOLD SHORT LINE BY 10 FT AND CLRED BEFORE THE C-130 PASSED US. A COMBINATION OF TALKING TO THE GND CTLR ON THE RWY (SHOULD HAVE BEEN TWR) - NON STANDARD PHRASEOLOGY AND A CAPT THAT WAS UPSET BECAUSE OF THE LONG TAXI TIME.