You would have to pay a HUGE etf to cancel your current plan, and then when you tried to open a new acct (within 90 days) they would just reopen the old one.
Believe me, this isnt their first rodeo. They know ALL the tricks. Your best bet is to wait till its been one year and see if you qualify for a one year contract (slightly more $ than the two year, but much cheaper than the ETF you are considering). Also, if you share your acct with anyone else in a family plan, and they have a sooner upgrade, you can trade them.
Sometimes its best to just call them and ask if they have any ideas. I worked for them and would happily search for anything the acct qualified for (since its in OUR favor to score an equipment order).