Michigan seems to have some interesting [link|http://www.divorcenet.com/states/michigan/mi_art09|laws] about moving and child support obligations:
Rules of moving out of state have changed over the years and will continue to change. The courts believe the idea that a dad is just as important as a mother. If by moving, either of those relationships is substantially jeopardized, the Court is very likely to deny the move. Cooperation of parties for the benefit of both the custodial and non-custodial parent and the well being of the child are factors to which the Court looks to in deciding to allow or deny the request to move. Courts also look at the educational systems in both places, the cost of living, the crime rates and whether either party has family ties in the proposed new location. The first thing to decide is if the party is planning on moving in state or out of state.
Check out the [link|http://www.acf.hhs.gov/programs/cse/|CSE] as well.
The law is on your side. Gather yourself together in a little while and have the state go after him.
Let us know if we can do anything for you. We try to help our own.
HappyThoughts++
Cheers,
Scott.