@raw0rz Yes and no if you are good with some people on the server such as admin not saying any names or anything but most likely if you get on their bad side they may send someone to grief your base and make it look like someone randomly found it! It will only take a up to a few hours to a few days to happen but it will happen so make sure to kiss a lot of ass =)
Not sure who you are referring to @raw0rz but Admins and moderators with creative permissions aren't allowed to raid, grief, or harrass players directly or indirectly as you describe. The past Admins who did so were removed by Crafty. You should probably communicate any concerns with him privately before posting something like this on the public forum.
@javonjw - assume all (non-staff) players are out to pk you, take your head, raid your base, and post its coordinates. Trust only those that you can invest time in vetting out. A little time spent carefully selecting your teammates will pay off.