I'm not entirely sure how it works, I'm assuming if the game saves then his weapons are gone for good. When my weapons were taken, I simply restarted my console and all of my weapons except for the hammer was returned to my weapon wheel.Yeah but if he join a new lobby he should get it back?
I bought them all anyway, I had enough money ... I can't be 100% sure if it was a modder, but it might be.There are a few ways to take weapons away with modding. The one in most public menus (Chr0m3xModz) is temp. If you haven't modded other than being in a modders game randomly I would contact R*. They can see which ones you have bought and stuff.
You should not have bought them back because they would have came back after a restart of your console. Sometimes people even get them back by finding a new session. If nothing else worked, you could have even sent in a ticket into Rockstar. It is too bad you spent your online money on buying all your weapons back.I bought them all anyway, I had enough money ... I can't be 100% sure if it was a modder, but it might be.
This happened to me too. I left the lobby (dashboard) and cleared my system cache. Everything came back except the hammer and golf club.