This must be your 1998 V70 you are working on, it is more forgiving than newer cars.

The crank and exhaust being off is not good. You are lucky that none of the valves are totally out of position. The timing marks MUST be aligned correctly after the tensioner is released.

In order to verify that valves and timing marks are OK, you are supposed to remove the spark plugs allowing the engine to rotate easily by hand. And rotate the crank at least 720 degrees (2 full turns), then re-check the timing marks.

The Tbelt needs to be very tight between the exhaust and intake cams, before you release the tensioner. Releasing the tensioner should not change the position of the exhaust cam.

The crank can easily move 3-4 teeth during the process because there is no compression. Care needs to be taken not to move it.
--
Always willing to listen, just not able to take direction.