Can you pull out grafts one month after a hair transplant?

You cannot dislodge a graft one month after surgery.  Grafts are usually secure within the first few days. 

We tell our patients that by the 5th post op day the grafts have taken hold and aggressive hair washing will not disturb them.  Keep in mind that during weeks 2 to 4 you may start to see loss of the hair shafts, this is to be expected.  Never fear, new hair will grow in its place as the hair cycle begins anew.

After a month, the grafts are securely healed in.  Aggressive scrubbing will not remove or damage them.

No worries, nothing happened to you transplanted hair grafts. I did a study and I have written several articles about wound repair, revascularization of the transplanted hair grafts "how take and survive" and the critical time is the first 5 PO days. At 33 days PO you normally can wash your donor and recipient areas.  

The grafts are completely secure by 3 weeks, especially if all of the crusts are off. By that time the stem cells have taken root