Suppose nobody has a majority in 8 delegations. Is it then impossible to nominate anyone?
With 18 winner-take-all contests, it is highly unlikely, even in a crowded field, that at least 8 of those would not fall one way.
Add to that the 14 winner-take-most contests, and it is almost impossible for that to occur.
Were that to occur, then yes, the way the rule is written, there could be no nominee until some candidates released their delegates and each set of released delegates were to work out who they would support. Once a majority of delegates in at least 8 States or territories decided they were going to vote for a particular candidate, then they could produce written support to the committee and that candidate would be nominated.