Interference? Other strangeness?

[snrmike]

The softball rules DO NOT give any leeway or caveats in this case.

The thing is, first base was occupied. Why was B1 running to first, was it less than 2 outs? If so, the runners must return to their bases. If there were two outs, the batter would be out for interference, especially since the second contact definitely effected the play on the ball.

This one is a tough call too, but I think it would be fair to say that runners should've stayed at the bases they occupied at the time of pitch, or the inning should've ended on interference.