Wombat, of course only the individual knows for sure but over the past couple yrs Dennis has always had big shoulders and arms. Its not just the shoulder thats impressive, its the overall massive arms. I honestly don't think he uses any synthol because its a genetically strong bodypart for him. Perhpas I underestimate the use of synthol cause I detest it....but my $ would be on no synthol in the shoulders or arms. Remember, lots of guys inject their delts so there is some swelling and temporary oil after a shot until it disperses. Synthol injections are pure oil and stay there for many months.
Matt, I've seen him in person and he's about 6'1 (at very least 6')...fairly tall for a BBer.