You know Prohm mentioned last week that Wigginton will be moving into a starting spot sooner rather than later? Maybe he's playing really well in practice?
Prohm knows the Cyclones highest ceiling come March involves Wigginton and Lard being starters (as planned before the season) and now building the foundation for that to happen. He has his reasons for not starting either yet due to good play by the new guys and the injury setbacks that have slowed LW and CL's game.
I wouldn't even be surprised if he already has a game circled for each to make the move. Prohm is looking at the long term goal and seems to have a good feel for each of his teams on the roster moves needed to get the teams attention and confidence ready for the end of the year.