Great! So he can show up and trashtalk his past party as a party that intentionally destroys your gear if they fire you. And additionally wait with firing you until you incur some injury and refuse to heal you using that they fired you [afterwards] as the reason. Probably all to ensure you really won't survive long after you leave, so new members should beware.
If there is some legal system, he should hit that up too.
Basically, he has enough dirt to drag their rep very much into the mud, with the combined vandalisation of a heirloom, of his personal equipment, and refusal to heal a member and instead firing them on the spot. Very idiotic party going to the effort to create that opening in their rep, when they could simply have kicked him out in a normal fashion and still been seen as the ones having giving him employment for years.