I love Ultimate Team with a passion, but the mode is just straight broken right now. Last year, I'd say 90-95% of my opponents quit against me online, so the only way to get coins was to finish vs the CPU. Since they (foolishly) decided to make that a disconnect for both parties, there's no way to make coins but buy them...
...of course, it's probably not a coincidence that EA is making so you either must purchase coins, or spend countless hours working the AH trying to flip cards.
according to Josh Looman (
www.twitter.com/josh_looman) they're working on a "fix" for this, but has also said a few times that the entire Madden team made their decision to allow people to quit without penalty, and that they WILL NOT allow us to finish games vs CPU.
un- f'in -believable