This is dodgy. Claims that statemente are fake. I also saw on another site that one of the apparent reasons for this was that people were touching a rumalla on the sants feet before putting it on Sri Guru Granth Sahib Ji.
Reference:: Sikh Philosophy Network http://www.sikhphilosophy.net/sikh-news/25164-babbar-khalsa-international-condemn-vienna-attack.html

It is weird that this has happened now. Like it was designed to take the wind out of the 25th anniversary of the attack on Harmandir Sahib.

But there are important issues here also. Today we have too many who will get excited about perceived 'beadbi' and act impulsively. We need cooler heads. We also have to address the issue of plurality in the panth. We all know that so much more could be done to uplift the downtrodden in Panjab. If mainstream Sikhism fails to do this, why are we complaining when people seek acceptance elsewhere. If anyone is claiminhg that oppression between so called 'high' and 'low' caste SIkhs is not an issue they are either in denial or unbelievably stupid.
Reference:: Sikh Philosophy Network http://www.sikhphilosophy.net/showthread.php?t=25164

Let the drama unfold.....