I think Glenda and Danny will stay around for a while, or at least until after the funeral. I think Jack will put the blame on Roxy, and Max will reveal he found the drugs.
The rest of the Mitchell's will most likely be worried how it effects Phil, especially with Tony just dying, and Peggy only dying a few months ago.
I think Max will see this as the reason for not going for revenage against Phil as well.
I can see Dot being the one to contact Charlie, and he will return for Matthew. This causing a rift between the Brannings, with Dot contacting Charlie.
I really wouldn't be surprised if we see Jack go away for a while, not being able to cope on his own.
I just hope they don't go down the road if a Honey and Jack affair with this.