B737 FLT CREW LOADS INCORRECT DEP INTO FMC AND HAS A TRACK HEADING DEV ON DEP FROM LAS.

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ACFT X FLT FROM LAS VEGAS TO SAN FRANCISCO. FILED SID WAS IDALE 2 OAL; REVISED TO IDALE 2; BIKKR OAL BEFORE DEP. FO WAS FLYING AND UPON ARRIVING AT IDALE; TURNED TOWARDS BIKKR. CTLR CALLED UP AND SAID IT APPEARED WE WERE HEADING TO BIKKR AND WE SHOULD BE PROCEEDING TO SHEAD ON A BIKKR TRANSITION. HE GAVE US A HEADING AND CLRED US DIRECT TO SHEAD WHEN ABLE. I REPROGRAMMED THE COMPUTER AND WE PROCEEDED DIRECT TO SHEAD. CTLR QUESTIONED WERE WE CLRED THE BIKKR TRANSITION. I REPLIED; REVISED TO BIKKR OAL. CTLR ISSUED SUPVR PHONE NUMBER AND ASKED I CALL IN SFO. I CALLED LAS AND TALKED ON ARR IN SFO. MY FO PROGRAMMED THE FLT COMPUTER WITH THE REVISED ROUTING EXCLUDING THE POINT SHEAD. I CHKED THE ROUTES PAGE AND SAW BIKKR; BUT DID NOT CHK THE LEGS PAGE. MY DISCUSSION WITH SUPVR REVEALED THAT THE ORIGINAL FILED RTE OF LAS IDALE 2; OAL; MOD2 SFO IS THE EXACT SAME RTE AS THE REVISED LAS IDALE 2 BIKKR; OAL; MOD2 SFO. MY FO READ THE REVISED RTE AS THE ATC INTENTION TO DROP SHEAD FROM THE RTE WHICH HE DID. SUPVR SAID THERE WAS NO TFC CONFLICT AND THAT HE WAS LOGGING THIS AS A DEV FROM AN RNAV SID. SUPVR INDICATED NO VIOLATION FILING. SUPVR ALSO INDICATED THAT WE WERE THE ONLY AIRLINE HAVING A PROB WITH THIS SID REVISION. POSSIBLY; OUR PLTS SEE THE REVISED SEGMENT AS ATC INTENTION TO FLY SOMETHING DIFFERENT THAN THE FILED RTE WHEN IN FACT NOTHING DIFFERENT IS WANTED.