Did Rosindell deliver the leaflets he denies approving?

From Left Foot Forward: 

Conservative MP Andrew Rosindell's protestations that he did not "write or approve" a leaflet delivered in his name in his Romford constituency look increasingly weak. He was out campaigning on the day the leaflet was delivered and has form on immigration.

The Observer yesterday outlined that:
"David Cameron's Tories were accused last night of dog-whistle politics after the Conservative leader appeared on the front of flyers saying the floodgates had been opened to mass immigration. Critics say the flyers are alarmist and misleading because they imply limits could be imposed on entrants from EU countries such as Poland...

"Rosindell said last night: "I did not write or approve this councillors' flyer. Immigration is an important issue but, as David Cameron has made clear, we must be careful with both the facts and the language we use. This flyer falls short on both counts, and I shall be pointing that out to the councillors." However, the material stated that it was "promoted" by the MP."

But these denials look increasingly thin as it emerged that the MP was out campaigning in the Mawneys ward in Havering on the day the leaflet was delivered. Local Labour party chair Dan Young - who lives in Mawneys ward - received a copy of the leaflet on March 13th. Rosindell's facebook status was updated at 6.35pm that day:

Political Scrapbook have also revealed that Rosindell "has form on race politics":

"In a blogpost noting the striking similarities between aspects of Rosindell's website and far-right campaign materials, Scrapbook wrote last December: "The MP for Romford has tabled a mere 102 questions on asylum and immigration and was a member of an organisation which advocated the voluntary repatriation of ethnic minorities until he was forced to resign by Iain Duncan Smith.""

Left Foot Forward has submitted the following questions to Mr Rosindell's office but been told that he is not available for interview:

1. At what point did you become aware of the existence of the leaflet?
2. Had you seen the leaflet (or a draft version) before the distribution on February 13th?
3. Although you are quoted as saying you "did not write or approve this councillors' flyer", did you have any role in the distribution of the leaflet on Feb 13th?
4. Do you know why the leaflet was only distributed in one ward of the constituency?