~snip~
AFAIK there are only two admins on bitcointalk so who is the remaining 3.

If you had read a few posts before you answered, then it would have been clear to you that the OP is wrong and that there are not 5 admins, but that the other 3 are actually global moderators. It is true that all of them are listed as administrators in the report form, and if you want to see exactly who it is, go to your private messages and click on any report link
"report to admin". There you will get a menu where you can see what it is actually about.