Station tracks blocked after train crash

[Tular]

It seems I've got some invisible trains blocking my station. Accidentally I removed some signals to improve the through-put of a junction but this caused 6 trains to crash, 2 of which were entering the station Chundworth Transfer. After TTD removed the wreckages the platforms can now no longer be stopped at. Trains see the tracks as available but they will not enter the block.

Removing and rebuilding the station solved the issue. I tried to just remove the track but it kept saying it was occupied.

[kamnet]

It's difficult to tell what the issue is from a screen shot alone. Providing a savegame would have helped.