I dont think d-bol at the end will "shut you down hard"
your Hpta is in complete shut down anyway from the prop (What dose are you running anyway?)
Dbol has a short half life, so it wont continue to shut you down for long periods of time.
In terms of hard shut downs normally people are concerned with 19-nor compounds because of there long acting esters.
As long as your PCT is sound i dont think you should have a problem.
Good luck.