Yeah I suspect they will send Williams back down, the goal was to get him ABs. While it's hardly fair, this trade also came as he flunked his latest audition - 0 for 8 with no walks in four games since coming back.
(Also, while still entirely his prerogative, you can't tell me his decision to report late and his desire to go back to Austin a mere 36 hours after reporting helped his cause. Between May 18 and May 28 he took two round-trip flights and had just eight AAA ABs. Of course he wasn't going to come back and start hitting.)
If and when Quinn comes back I think you can afford to DFA Gosselin (and probably won't lose him). You certainly don't need both Gosselin and Rodriguez (and in addition to being a Kapler croney the guy has a postive WAR and .865 OPS).
Yeah but if Quinn is back he's essentially the starting CF so your bench is Kingery, Bruce, Knapp, Rodriguez. That's two IFs. No way Williams is staying (if not tomorrow, he'll go down when Quinn gets back). In any case, so long as you have Kingery to move around the board they're fine in a pinch.