Here's an update from Facebook from his wife Mary
Update on John. He is coming home today! They did a lot of testing this morning and found his heart size is completely normal. There is no calcification build up in his arteries but there is some weakness due to the clots that were there. The weakness is about 10% of decreased heart function and could return to normal if things go right. They could not find the source of the clots but he is on blood thinners to manage that. He has bounced back very strongly from this. Thank you all for your support and encouragement.