We just wrote about this ourselves and quoted the letters put out by the YU staff.
Check out the Headlines in Halacha podcast on this issue.
Includes recordings of:
Harav Mordechai Giftar – Rosh Yeshivah of Telshe – 17:26
Harav Yosef Dov Soloveitchik – Rosh Yeshivah YU – 21:24
Rabbi Meyer Twersky – Rosh Yeshivah YU – 25:26
And then a short interview with Rabbi Hershel Schachter Rosh Yeshivah at YU himself (27:30).