I've since poked about the wreckage. The hydraulic tensioner was the fail point. It's leaking and the pin did not extend after the belt broke.

1998 V70 Base, 264,478 Pulley seized No service history, played the odds and lost. I put 22,000 on the car in the 18 mos. I had it. Had been done at least once in the past. Whiteout on the cam pulley ticks. Car was making slight whine. I thought it was the power steering pump. I was so proud of myse...