SAN FERNANDO – South Africa collapsed from a winning position to lose by 30 runs to West Indies in their T20 international on Sunday, with the Caribbean side taking an unassailable 2-0 lead in the three-match series.West Indies made 179 for six but the South Africans were well on their way to victory, reaching 129 for 3 with more than six overs remaining.The Proteas then proceeded to lose their last seven wickets for just 20 runs in 35 balls, finally ending up bowled out for 149.Reeza Hendricks made 44 off 18 balls in a positive start to the run chase, but it was a day to remember for West…