It's clearly a wind up. Accrington's annual wage budget for 2013/14 will around £500k, Billy Sharp would be on more than that by himself!
Even if you overlook the huge lack of ambition from Sharp, Cortese isn't going sanction such a loan that wouldn't see much of Sharp's wages paid. Saints will likely be looking to sell him in the summer, not loan him out again and certainly not to a club below the Championship.