A Framingham SWAT team member yesterday was placed on administrative leave for fatally shooting a 68-year-old grandfather of 12, police said, as relatives struggled to cope with the sudden and violent death. “I was shocked,” said grandson Andrew Wilkins, 23, of Springfield, who fondly recalled playing pickup basketball in Cambridge with Eurie Stamps. “I just didn’t understand what transpired. What exactly caused a situation like that to happen?” Early Tuesday morning, police raided the home at 26 Fountain St. as part of a multiweek drug investigation and shot Stamps, who was not the target of the investigation, according to police...