I would tend to agree with Attorney Lewis on this matter, likely it won't have a huge effect, but that does depend on who you are trying to get a job with. I would recommend working with an attorney to keep it from going on your record if at all possible.
There is a small chance with an attorney you could stay on diversion even though you violated. It isn't likely, but the prosecutor might be willing to extend the terms of your diversion. I would recommend speaking with an Attorney that handles cases in Manhattan, KS about your case today.
Often times if you are able to get your license reinstated the prosecutor will agree to amend to a lesser charge, and avoid jail time. However, this is completely up to the prosecutor. I recommend you speak with your attorney about your options.
I would contact an attorney in your area immediately. You are facing serious charges. You may have multiple defenses to your case you would need to discuss with your attorney. There is always a chance to have charges dismissed, but it is rare because the prosecutor won't file charges unless they believe they can get a conviction.
Yes, that would be deemed a criminal threat. I would contact the police, and file a report immediately. As attorney Lewis stated, it will be up to the prosecutor as to whether or not to file formal charges.