There are a number of cases where poskim use that at the end it would be mutar bdieved in either case as a snif lkula.
Source please?
The cases I’m aware of are where it’s impossible to check. That is not the case here since the corn can be removed and rinsed.
It may be assur bedieved if you make a ספק ספיקא לכתחילה בידים, need to check on that.