Probably mutually terminated, which it doesn’t sound like is the case here. When the FA shut down the emergency loan system a few years they also removed the right to recall players at the same time, so unless something has changed and gone under the radar since, we must have agreed to terminate Twine’s loan. Unless he’s going directly on a permanent, which is the only time a player can be recalled between two domestic clubs.
It was also the major obstacle in sending Harvey Vale back last season, who didn’t really return from what I remember, just went back to training with their development squad but couldn’t play.
Lots of loan players have already been recalled this window.
Sending players back is completely different to parent clubs recalling them, the former can only be done if the parent club agrees, the latter can be done at any time in the window as long as there's a recall option (which there is in most Premier League loans, other than those where a loan fee was paid).