They said the same about the US Postal cycling team, but there's more than a fair chance you're right.
The whole thing just doesn't add up. I could have added a 2-5 defeat to Real Madrid, 4-1 at Napoli and 1-0 at Forest to my list. Go back two years earlier and they just had a little slip-up where they lost SIX home PL games in a row. Perfectly normal, that. Then they all of a sudden win eight games in a row at the end of the season to make the CL. They had a dart out of nowhere at the end of last season but just missed out. It's unnatural and in plain sight.
Oh, but it's just because they work harder than everyone else and it means more! Yeh, right...