Certainly could just pop it back in if nothing wrong with it then just order one!
Only reason i bought one is that my car is a 1 owner example and he told me its deffinately never been changed so thought sod it il just change it as 7 years old anyway, glad i did!
Maybe you have a boost leak?
Good opportunity to check intercooler pipes too while your under there!
Il be checking my DV every 6 months from now on as old one was in a mess!