You’re paraphrasing in a way to make it more suspicious. Cora never said those s bolder words. Now he did say “I was joking when I said Carlos Beltrán was their biggest free agent acquisition” and then went on about details. Sure, he absolutely could have been alluding to cheating. Or he might have meant something else. They did do things besides cheat together, and Beltrán seems to draw praise from everyone everywhere.
My mind is open on all this and while I admit I have some strong suspicions, there is a chance I’m wrong. And that doesn’t mean anything is being covered up.
Of course, it doesn’t eliminate the possibility either;)