Vorph
Silver Baronet of the Realm
Now that you mention it, I gave up trying for the 4 minute one on my crusader and did it on the DH instead. Then I got the 3 minute one on my wizard without even trying.Thorns will get him T10 in under 4 minutes though, which is what you need for the stash tab.
I think when I was still playing the crusader regularly I wasn't aware that the clock keeps running until you turn in the rift, so it's probably isn't nearly as much of a pain in the ass as it seemed to me at the time.