Two things look to be in play:
1) They obviously did not give themselves enough lead time on the series. They're buffering the action with lots of easy-to-animate long stretches because of it, and this includes the recap episode. At his point, a short mid-point hiatus at Ep13 would probably do them some good, but I don't expect it.
2) They're totally going to find an "ending point" and wait for an S2 to follow up. I'm not even spoiled, and it's blatantly obvious we're still early in Act I of the series. Bleach's insane popularity and lack of backlash in going on hiatus has paved the way for other properties, and it's a far better option than doing an FMA v1.
I don't think we'll get a season 2, but if we do I don't think Wit Studio will be handling it. Not sure why they didn't go with a studio like Mad House or something.
I really believe we'll get an anime ending.