I just experienced this myself. On a friday evening, I was cleaning and picking up used paper towels on the floor and put them in the bin, I didnt realize that I left a glass terrarium door open and it was head level high. When I stood back up, My head hit the door, and it fell apart making a very lound sound and there were glass shards everywhere. No snakes were harmed by glass, they were nowhere near the glass shards. I spent the whole night removing the glass shards from the floor. Next day was feeding day and 2 tame snakes that i have had the longest bit me. One just struck and pulled back, one bit me and coiled my entire hand and would not let go, I had to go to the sink and softly pour water on her head so that she would let go. Another snake went off feed entirely for a few days. It is crazy to think that the loud sound of glass breaking for a split second could casue such stress on these animals.
Anyway, there is a youtube video by justin kobylka about taming snakes. Basically u should grab them from behind and then put your palm on top of their heads just for a couple seconds, and they would pull back and not strike for the next few hours. Works like magic for me.