Probably not...
Sounds like PR puffery to me. I suspect that Android for business might take a hit from recent malware, but that ironically that level of publicity will only help. My guess is that in 2-3 years it'll be Android number 1, iOS 2, Blackberry 3. Whether Windows Phone is number 4 or not will probably depend on whether they're still bothering with it and I'm not entirely certain they won't have decided to just cut their losses and drop it altogether by then. (Incidentally, I do know a couple of companies use Windows Phone for business... they're migrating away to other platforms...)