Talk with a local lawyer. It's very likely that a deal can be arranged and you can move n and forget this.
In this economy, it's highly unlikely that Michigan would extradite you.
But, your name is probably in NCIC.
You get stopped by a copper, she runs your name, gets a warrant hit, arrests you, you sit in jail a few days, they let you go.
This can continue for a very long time.
Or, they might come and extradite you.
Why not fix it, instead of rolling the dice?