Reduction in compensation after non-compete signed

I signed a non-compete in Ohio in 2006. I am a Sales Rep for a company and about half of my weekly income comes from commissions.

Recently the company added a new quota on the amount of weekly sales transactions I must generate to be eligible to receive any commissions. In the past I was paid on any and all transactions.

In the past 6 weeks since the new quota was put into effect only about 50% of the company's sales staff is hitting the quotas on a weekly basis. Meaning every week, half the sales team in not getting paid any commissions which equals about half of their total compensation.

Would such drastic reduction in compensation or even the drastic restructuring of the compensation package invalidate a non-compete agreement?