That’s what I’m thinking because I had to release the ebrake to tow then put it back on in the shop....and it started after removing seat switch, which was probably coincidental.
Injust want to make sure you know to release the hydros before towing.
My parking brake has killed my walk-behind many times. The brake lever catches shrubs and gets pushed on. Never had it happen on my riders but a bad switch would do the same thing.