A C310 PLT LNDG ZZZ DURING FLY-IN; LANDED ON RWY 27L VERY CLOSE BEHIND A PIPER LANCE THAT STOPPED ON THE RWY.

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DURING THE FLY-IN ACTIVITIES AT ZZZ; WE WERE FOLLOWING DIRECTIONS AS PROVIDED BY THE TWR CTLR FOR LNDG AT ZZZ. AT THE TIME; ZZZ WAS OPERATING WITH RWY 27L AND 27R (TXWY). AS WE APCHED THE ARPT ON THE DOWNWIND LEG; THERE WAS ANOTHER ACFT IN FRONT OF US (A PIPER LANCE). THE TWR CTLR CALLED FOR THE LANCE TO START ITS BASE LEG; THEN CALLED US (TWIN) TO TURN THE BASE LEG. THE LANCE WAS INSTRUCTED TO LAND. AS I RECALL NO INSTRUCTION WAS PROVIDED ON WHICH RWY THE LANCE WAS TO LAND ON. THE LANCE APPEARED TO BE UNDECIDED WHICH RWY TO LAND ON DURING HIS FINAL APCH. TWR INSTRUCTIONS WERE FOR ME TO CONTINUE MY APCH TO LAND ON RWY 27L -- THE RWY (RWY 27R IS THE TXWY/TEMP RWY). THE LANCE THEN LANDED ON RWY 27L AND I WAS INSTRUCTED TO LAND BEHIND THE LANCE. I PROCEEDED TO LAND; ASSUMING THE LAND SHORT/MIDDLE/LONG SEQUENCE THAT IS NORMALLY FOLLOWED WAS IN EFFECT AND THAT THE CTLR WOULD PROVIDE VERBAL INSTRUCTIONS TO THE LANE TO LAND/TAXI FURTHER DOWN THE RWY. AFTER I LANDED AND APPLIED MAX BRAKING; THE LANCE STOPPED ON THE RWY IMMEDIATELY AHEAD. THE CTLR THEN TOLD ME TO GO AROUND. I COULD NOT GO AROUND AS MY AIRSPD WAS LESS THAN 50 KTS. THE TWR CTLR THEN TOLD THE LANCE TO PROCEED DOWN THE RWY; WHICH HE DID NOT DO. GND CTLRS (APPROX 4) WERE BASED AT THE L SIDE OF THE RWY. ONE OF THE GND CTLRS WAS HOLDING THE BATONS IN THE 'X' POS INSTRUCTING ME TO STOP. I STOPPED APPROX 50 FT FROM THE LANCE. BECAUSE OF THE PROX OF THE GND CTLR TO THE LANCE; THAT PLT MAY HAVE MISTAKEN MY STOP INSTRUCTION FOR HIM. AFTER ANALYZING THE EVENTS; I CONCLUDED THE FOLLOWING: 1) I SHOULD HAVE INITIATED THE GAR AND IGNORED THE CTLR'S INSTRUCTIONS AFTER CLR DIRECTIONS WERE NOT PROVIDED TO THE LANCE (L/R RWY AND LAND MID/LONG). 2) THE CTLR'S PERFORMANCE THAT DAY WAS NOT EQUIVALENT TO THAT REQUIRED OR DEMONSTRATED AT OTHER TIMES FOR THE ACTIVITIES -- INADEQUATE L/R GUIDANCE; NO INSTRUCTION/FOLLOW-THROUGH ON LNDG POINTS (LONG/MIDDLE/SHORT) AND POOR CALLOUTS IN GENERAL. 3) THE GND CTLRS AT THE EDGE OF THE RWY WERE NOT PROVIDING ADEQUATE GUIDANCE. HAD THEY BEEN INSTRUCTING THE LANCE TO MOVE IT ON DOWN THE RWY; THIS EVENT COULD HAVE BEEN AVOIDED. THERE APPEARED TO BE INADEQUATE COORD BTWN GND-BASED PERSONNEL AND THE CTL TWR.