The NJEA's conflict of interest policy is clear, and NJEA President/gubernatorial candidate Sean Spiller has violated it by his actions and, at the very least, by the appearance of a conflict of interest.
As NJEA president, Spiller has a fiduciary duty to teachers to act in their best interests. By using the NJEA's Super PAC, Garden State Forward, to spend $40 million backing Spiller's vanity run for governor, NJEA leadership (including the self-interested Spiller) is not acting in teachers' best interests.
The NJEA has institutional mechanisms to express teachers' collective will, including an elected Delegate Assembly and various committees made up of delegates. The NJEA's traditional PAC, NJEA PAC is run by such a committee and is funded by voluntary dues, so it can fairly be said to be in teachers' best interests. No conflict here.
In contrast, Garden State Forward is run by three top NJEA executives (including the self-interested Spiller) in a completely opaque process and is funded by teachers' mandatory, annual dues. Even worse, NJEA leadership hides the existence of Garden State Forward, so few, if any, teachers know their dues are funding Spiller's run. That does not reflect teachers' best interests and is a conflict of interest.
This is the third time in his political career that Spiller has had a conflict of interest, and the third time he has ignored it. This time, it's his own union and NJEA leadership is complicit.