The suits do not get “deconned.” The suits are designed to be worn once and then incinerated.
Doffing the gear is a methodical process of slowly turning each layer inside-out and stepping through successive decon areas until you step across the “clean-line” and toss your gloves.
It looks like the procedure in Africa is to spray the suits with a bleach solution and then dry and re-use them. Probably due to a shortage of suits, something likely to happen pretty quickly in an area with a significant outbreak.
The washing process itself is hazardous, since contaminated airborne droplets can be created during the washing.
I have seen the medical workers still in the suits being sprayed down with sodium hypochlorite solution. This probably is a desirable procedure prior to removing the suit.