[Mbodell]

I definitely thought that passing 2♥ was a LA to correcting to 3♣. I was thinking that without UI I'd probably bid 3♣, but I might well pass 2♥, and that with the UI 3♣ is certainly suggested over 2♥. I didn't even think about the pass of 3♦ as being an issue until reading the other posts.

[ggwhiz]

The nail has been hit on the head for me.

Passing 2♥ IS a logical alternative and quite likely given the absence of the spade suit. Especially at MP's

[drankin]

Since East has not yet called over 2H, the director has a duty to explain to West that he may change his call if it was based on the incorrect explanation. Since E/W made no further bids, this may not seem important, but East is entitled to know that West would still pass a natural 2D bid, before he has to consider his action over North's 2H bid. No doubt this is why the director is to be called.

[FrancesHinden]

It wouldn't occur to me to pass 2H, I would always give preference back to clubs because I would expect at least a 4=6.

It's a bit of a side issue, because as it happens 2H will play incredibly well for NS and will make easily, possibly with overtricks. 3D will not score as well.