After four months of rehab, Adam Archuleta was back on the field for voluntary organized team activities. "Let's put it this way: Compared to where I was during the season, I'm about 6,000 percent better," Archuleta said. "From what I hear and what people tell me, all the experts, they say I'm ahead of schedule. "It was pretty much a nightmare," the St. Louis Rams safety said Tuesday. "I really probably had no business being out there. When you play a whole season and you can't bend over and touch your knees, it's a big deal." Archuleta played with a herniated disc in his back all last season after getting hurt in training camp, and was nowhere near the impact player he had been in his first three seasons with the Rams.