The Title may sound deceiving, as this doesn't have much practical value. Also, if this is a repost, I apologize.
The exploit works similar to the Broken ZK Exploit between patches 1.03 and 1.03a.
1) You kill Diablo on a Main account.
2) Alt Joins
3) Main leaves
4) Alt Turns in for Free Diablo Kill Credit
5) Main Resumes solo
6) Second alt joins
7) Main leaves
Alt turns in
9) Etc etc etc
This is useful for those with many 60's who might not have inferno unlocked yet, and want to get it done quickly, rather than kill Diablo multiple times.
Again, sorry if this is a repost.
RDI