Rule 15 (a) (1) seems to me that the delegates are bound according to state rules. So, if you change the state rules at the state convention to unbind the delegates, then I see no reason why supposedly bound Paul delegates can't vote for Paul at the national convention.
Rule 37 (c) (c) merely states that no delegate should change their vote according to the state rules unless they are given a second chance to vote (after the first ballot).
I've seen some suggestions that people vote at the national convention to unbind the delegates, but I'm not sure if that's allowed according to the national party rules.
The key here is state vs national, and the way I see it is that any given state can send a delegation to the national convention to support the candidate of its choosing.
Want DP delivered to your inbox daily? Subscribe here: