Yes that could be the reason.

Another source of cash will be expiring options and warrants in 2015, which could generate over $3 million. Even at the current low share price 90% of those options and warrants are currently in the money and would be exercised. So I really don't see any cash issues for the company in the next couple of years at the current rate of spending.

And of course we all hope and expect a buyout/offtake before then anyway.