The disposition is basically the sentencing for a probation or parole violation. The judge has several options in terms of sentencing.
First, they could revoke your probation. Having a revoked probation means the early termination of your probation period and prison time. The sentencing will come from the original sentencing range for your case.
The judge could also reinstate the probation for the terms you already had. You would basically restart the probation period.
Lastly, the judge could increase your probation by either adding more terms or by placing you on intensive probation. This means you would be on house arrest, and you would need to call your surveillance officer every time you leave home, and much more.