BACKSTAGE at the Cultural Centre at lunchtime yesterday with the Byelorussian Ballet as they went through their paces in readiness for last night's performance of Spartacus, we were quite intrigued by their choice of prandial fare. Principal Vladimir Komkov was tucking into a lunch-box from rib house Tony Roma's - quite appropriate since on stage he displays a lot more rib and beef than would normally be considered good for the delicate senses of ballet lovers. From what we observed during rehearsals, the Minsk troupe's production - which is today and tomorrow as well - is macho indeed; all muscle and basso profundo with none of the mincing leaps and frilly tutus that usually spring to mind when this dance formis mentioned. Which is why we believe the ballet-loving matrons of this parish will be out in force in the front rows of the Grand Theatre at full swoon to ensure they miss nothing as these Russian hulks storm around. And who knows, the odd surgical stocking might even get thrown on stage.