Canadian Bishop suspends the Latin Mass....?

Can a Bishop  suspend the valid and licit offering of the Mass in the Extraordinary Rite in his Diocese?
And, didn't the letter from the Congregation for Divine Worship and the Discipline of the Sacraments,  clarify that it is not licit to deny reception of Holy Communion on the tongue?

Rorate Caeli reports on an exchange of emails following the suspension of :

"all activities of the Latin Mass communities in Calgary and Medicine Hat due to a pseudo-scientific and anti-Canonical order mandating the non-reception of the Eucharist on the tongue due to concerns related to the transmission of the Influenza A (H1N1) virus."

At the end of the email correspondence, Bishop Henry, Calgary, Alberta, concludes:

From: Bishop F.B. Henry

Date: Mon, Nov 30, 2009 at 12:22 PM

Subject: RE: Calgary's Saint Anthony Parish: forbidden to have Mass if communion in the hand is not offered?

To: [parvenu74]

I am well aware of what the congregation decided but quite frankly, it is not their call. It is mine. [Emphasis added]