Retirement tax questions

I was just told by TDA that this Disaster Declaration option has been extend to August 15th.  I assume that if I return the distribution amount taken in February before August 15th, the IRS will keep the amount I had withheld for tax and penalty purposes, which could mean that I would be owed a refund.

 

On the other hand, I expect I will have to pay back some 3 months of healthcare exchange subsidies because the job I started in March will likely make me income ineligible (I'm hoping). I switched over to my new employer's healthcare plan in March but still had 3 months of subsidized healthcare for the year.

 

So maybe the additional withholding will balance out the federal subsidies owed.  

Thanks all for your help.