Gom, you've been beating this drum since well before the decline or comment. It was already sealed.
As for what I believe, I believe there's a possibility he was using, and it's for one simple reason, because he was playing major league baseball. It's also possible that switching to team that preached a different approach to hitting allowed him to realize his full potential. Speaking of which, that full potential came between the ages of 27-31, which is the typical peak in a career curve. Furthermore, the potential existed. He was not a talentless scrub as you describe him. The fact that he was release says nothing. Manny Ramirez was put on irrevocable waivers. Johan Santana was picked up in the Rule V draft, so was Josh Hamilton. Teams f*** up all the time in their evaluations.
Here's what Ortiz has done in terms of ABs and HR in his career.
[table]Year|Age|AB|HR|AB/HR
1998|22|278|9|30.9
1999|23|25|0|inf
2000|24|415|10|41.5
2001|25|303|18|16.8
2002|26|412|20|20.6
2003|27|448|31|14.5
2004|28|582|41|14.2
2005|29|601|47|12.8
2006|30|558|54|10.3
2007|31|549|35|15.7
2008|32|416|23|18.1[/table]
I think you are guilty of looking only at the HR column and totally ignore the AB column. This improvement is not drastic, and while it's possible the difference is PEDs, it's just as possible he was given different instruction and direction from the organization. Especially when you look at this MiLB performance. He hit 31 HR at 2 levels as a 21 y/o.
Predicted Response: The MiLB was because of PEDs from the DR, and he quit doing them because he didn't want the Twin Cities to think poorly of him for doing something that wouldn't have been discovered because it wasn't against the rules at the time.