Question on obstruction

[chuck chopper]

I say:
1) Put him on 2nd
2) Call Obstruction when it happens, and award 1st if he's put out going back to 1b. The runner may decide to go to 2nd on a bad throw, etc then if out at 2b I can't see protection for him. But since there is a possibility the runner may make it to 2B or better, that is why I'm thinking we should not kill the play.