Norton detects Trojan but wont delete or repair it

Hi all,

 

I have an MBP running Lion 10.8.3 and this week my Norton (IS 5 for MAC) has begun detecting a number of trojan horse files that are showing in one of the mobile backup files for MS Office for Mac. Norton is detecting them but gives no option to repair, delete or quarantine. When i search for the source folder in finder it cant find them. Can anyone shed any light on this and is there any tool I can use to delete the files? An example of where one of them is stored is:

 

/.MobileBackups/Computer/2013-05-28-181423/Volume/Users/AndrewGrierson/Documents/Microsoft User Data/Office 2011 Identities/Main Identity/Data Records/Message Sources/0T/0B/0M/13K/x27_13088.olk14MsgSource

 

Thanks in advance,

 

Andy