There was an actual complaint on me on the old Phoenix forum exactly like this one. Someone was near our money chest and turned around and kept randomly swinging near me, then when I attacked (not even killed him, he killed me) he reported me and demanded a refund. I didn't have evidence but it was the same scenario as yours, where he asked if I had evidence of him aiming at me which I would class as evidence enough.
In all honesty though, the rant is a wee bit pointless since the mod has gotten to that stage where such pettiness has become the norm. Admittedly I did take this cunt of a mod pretty seriously at one point. I've had rules broken on me so many times since coming back which I would've otherwise reported but just chose not to. I do find myself having more fun getting on with it and sorting it out myself.
The second you do start taking this mod seriously is the second you should probably sit and reflect for a little bit. We're all still pieces of shit who should get our lives together though either way. xoxoxo