ESPN Plus has hijacked my Roku TV

Well, the issue seems to have resolved itself. As previously posted, I had tried system reset from within the ROKU TV "Settings/System" menu, as well as a full factory reset, with the reset button on the side panel of the TV, and reconnecting to home network both wired and wireless. All of these measures failed, with the TV, each time, defaulting to the weird state of very lagging remote control response, and automatically reverting to the ESPN+ app home screen. I subsequently removed the TV from it's location, and replaced it with another Roku TV that was seeing little use in my office. The dysfunctional TV then sat, unplugged, on my bathroom vanity for about 48 hours, as I had planned to contact TCL support for any further advice. To my surprise, the next time I plugged in the TV and powered it up, it was working as it should, with good remote response, and all of my apps/channels displaying normally. The ESPN app was still installed, but was starting up normally, in response to remote control.

     I am wondering if the symptoms were caused by someone accessing their own ESPN account from within my WiFi network (we had a house sitter staying at our home several days just prior to this issue developing. I may never know for sure.