If you have an FHA loan and are behind in pymts but not in forecloser can your bank take poss. of the home.?

Applied for short sale and was denied due to too much negative equity in the home. It is not in foreclosure and less than 3 months behind in pymts. There has been no sherriffs sale set up. And the mortgage company never contacted me to tell me they were taking possession of the home. My relator contacted me and told me they called her to have her take her lock box off the door because they were changing locks and winterizing the home. The mortgage company this morning can't figure out why they did it. There are no comments on my file and it has even started processing for a Deed in Leu. Is the house still my responsibility and what should I do from here.