I am experiencing this problem as well. I played online this morning, completed the Operation TRIBUTE Weekend Challenge. Closed the game.
When I restarted the game, I cannot connect to EA Servers. Instead, the connect button says "Redeem/Purchase Online Pass." When I attempt to enter multiplayer, I am shown a screen saying I must purchase and redeem an online pass to enter multiplayer.
Restarting the game doesn't solve the problem..
Restarting Origin doesn't solve the problem.
There is no option within the Origin client to redownload the Online Pass.
EDIT: I am playing on PC.