It is always possible to decompile a plugin, but you will lose all comments and I believe a few other things, though I am not certain. If you are afraid of your host taking the files, then I think it is time to look for a new host.
I do not browse the forums regularly anymore. If you need me for anything (asking questions or anything else), then PM me (be descriptive in your PM, message containing only a link to a thread will be ignored).