A lot smells bad here...
First, remember I'm an Ohio lawyer, so I know this law, very well. court records show he's charged with a violation of Revised Code 2923.122 It's a felony of the Fifth degree. Lowest level felony. Here's the statute...
http://codes.ohio.gov/orc/2923.122And here is the online court file;
http://courts.co.ashtabula.oh.us/eservices/?x=lsg4PkaduwUGEaiJyDPex3PwNB6C1JU2nA7YsPABKydyoCdgOpS3Bkl05XJ8dyBuz6vt1X7jsA4pTP6xaHh*ow
Now, nothing in his file shows any of the bond terms he's talking about, though the weapon restriction is pretty standard in felony bond, and may be a part of the pretrial program the record refers to. Interesting he was placed on a GPS unit. it appears that they are treating him as a potential school shooter kind of thing. But $500.000 bond is more than I see on many actual violent crimes or sex offenses.
Anyways, to be convicted under the statute, the State has to prove that the knife was a "deadly weapon"
http://codes.ohio.gov/orc/2923.11As you can see, deadly weapon is a 2 part definition. They have to prove (1) it was capable of causing death and (2) the item was designed/adapted, used, or carried as a weapon. the second part is the hang-up here. I can't find any description of the knife. Some knives are designed as weapons... butterfly/bali-song come to mind. Nothing says he used it as a weapon in any way. As for the carried as a weapon part, if it was truly with medic gear, I don't see how they will get a conviction. I have seen many cases where a kid has a knife at school, threatens someone with it, or makes statements about carrying the knife as a weapon (i.e.- See this blade? if Johnny messes with my girl again, I'm going to cut him.)
I don't know what he did to piss of a bunch of people here, but they look like they are all out to get him.