Engine: T5: Coolant hose popped off, engine overheated.

[Verracciii]

Hey,

Currently still in a bit of shock. I went back into my car after a bit of shopping only to turn it on and it started like the battery was dead. I then saw that the coolant temp was at the max. I immediately turned off the engine. The coolant hose from the radiator to the engine head popped off. We had trimmed the hose after it split from a corroded hose clamp about a month ago. I popped it on and fastened and filled it with coolant. I then waited around 40 minutes and then turned on the engine with a starter pack, it was only around a 40-second drive home. Temp seemed normal and I had air heating turned to max.

I am just now stressed and would appreciate any words. I may have a slight head gasket leak possibly. Smoke from exhaust but it's not thick. I am just paranoid about driving it again.

I bought the car from my dad and he's always left the coolant reservoir slightly opened to relieve pressure. Yesterday I closed it fully and then this issue happened, could this be a causation?